Good luck achievement hunters! You may also be interested in my All Mushrooms and Insects guide.

For those getting into this game with the intent to 100% it, I recommend the following:

• Setting up base in the Gateway Nexus
  
• A workspace clear of wild frogs (if you get lonely, go look for plushies)
  
• Getting the Spore Net from the kindergarten as soon as it becomes available so you can collect spores for each mushroom you encounter
  
• Lingering around in favourable conditions for a certain mushroom species to collect them in bulk and then almost never having to return to repeat the process - I never bothered with longer-lasting compost, I just made a lot of the cheapest stuff and placed down many cultivators at once, temporarily.
  
• Setting down plenty of large crates to keep mushrooms, their pure mud (if it's useful - a lot of dream shroom powders don't do anything by themselves) and their spores.
  
• Getting a breeder to get frogspawn without losing gen 1 frogs, and using the spawner for the "stepping stone" frogs you use along the way to getting new species/variants since losing them isn't a concern
  
• Using the storage slots on the nursery to help keep track of which mud you need to use next and which you used last - "use next" to the left and "already used" on the right.
  
• Keeping crates with backups of your spawner yields - take one spare from each batch laid. In my experience it's fine to discard the third if they show up.
  
• Allocating one large crate per species of frog where you should ideally keep two Gen I instances (explained later), some of their unaltered Gen II frogspawn and their variants.
  
• Gathering large stockpiles of various insects with a range of flavours. Bitter (pondskater), salty (marshfly/dracofly) and slimy (jellyfish) are all very commonly requested. Umami was one of the least required - but should you need it, it's obtainable from dream state bees in the Kindergarten at night.
  
• Making use of the feeder's extra storage slots

Alright, it's now "later" - you'll need a good variety of first generation frogs as a base for those you'll use in ancestry locks!

Remember - frogs are great escape artists. Be sure that wherever you raise the tadpoles, they can't use their new legs to get far before being caught.

Frogs with a base stat of 4, with the exception of some variants.

Common Green | 4444444 | Default
The start of your journey. A perfectly generic frog.
Greater Green | 6454744 |
Pungent Green | 4554444 | +1 Nobility, +1 Odour

Vast Mudlurker - 7444444
Required for progression due to its ability to hold down pressure plates.
Poor Mudlurker | 7344444 | -1 Nobility
Royal Mudlurker | 7774444 | MAX Odour

Long-Legged Dazzler | 4774444 |
Ultimately not very useful unless you want to use the bug trap.
Longer-Legged Dazzler | 5774444 | +1 Amplitude
Long-Winded Dazzler | 4774441 | min Saturation

Furious Lurker | 4447474 |
Maximum umbrage and edacity - this ravenous beast is great for algae filters in Kindergarten, defrosting sensors/treasure chests in Climate Control and creating warm conditions for mushrooms.
Obvious Lurker | 4447574 | +1 Ribbit
Rancid Lurker | 4257474 |

Weeny Sponge | 1444441 |
Minimum amplitude and saturation - y'know. Like a sponge. Keep one of these on you especially when you get a backpack - its traits are essential for progression and environment regulation.
Hungry Sponge | 1444451 | +1 Edacity
Sleeping Sponge | 1555551 | Dreamy Variant

Pristine Peach-eyes | 1414444 |
Minimum amplitude and odour - unhelpful for machinery, but very cute and sweet.
Preening Peach-eyes | 1614444 |
Pristine Red-eyes | 1415544 |

Dripping Giant - 7444447
Maximum saturation and amplitude - inverse weeny sponge! The vast mudlurker makes a good base to get this one from.
Contented Giant | 7444437 | -1 Edacity
Dripping Sleeper | 7555557 | Dreamy variant

Foul Screamer - 4474744
Its obnoxious screams are needed in the Residential District to power machinery.
Hazy Screamer | 4374744 |
Flooded Screamer | 4474746 |

Black-eyed Bawler - 7444744
Shut-eyed Bawler | 7544744 |
Funky Brawler | 7555764 |

Red-Backed Fury - 4447747
Small-Backed Fury | 3437747 |
Red-Backed Feaster | 4477777 |

Frosty Hollow - 4441474
Damp Hollow | 4441476 |
Frosty Hollerer | 4441674 |

Reeking Sneaker - 4774144
Raging Sneaker | 4777174 |
Fleeting Sneaker | 5775155 | Dreamy variant

Bloated Thunder - 7444774
Storming Thunder | 7477774 |
Sleepless Night | 7555775 | Dreamy variant

Frogs with base stats of 5, with the exception of certain variants.

Dozy Dreamer | 5555555 | Default in the dream
Burly Dreamer | 7555554 | Max amplitude, -1 Saturation
Polished Dreamer | 5445555 | -1 Nobility, -1 Odour

Grubby Rascal | 5175555 | MIN Nobility, MAX Odour
Starving Rascal | 5175575 | MAX Edacity
Common Rascal | 4174444 | Common Stock

Pocket Snoozer | 1555555 | MIN Amplitude
Silent Snoozer | 1554455 | -1 Umbrage, -1 Ribbit
Damp Snoozer | 1555556 | 1555556 | +1 Saturation

Spotless Napper | 5515555 | MIN Odour
Slippery Napper | 4515555 | Reduced Amplitude
Spotless Nipper | 4414444 | Common Stock

Drowsy Deluge | 5155557 | MIN Nobility, MAX Saturation
Noisy Deluge | 5155757 | MAX Ribbit
Trivial Deluge | 4144447 | Common Stock

Wilted Skulker | 5511551 | MIN Odour, MIN Umbrage, MIN Saturation
Wilted Sulker | 551145 | Reduced Ribbit (Range 1-4)
Banal Skulker | 4411441 | Common Stock

Dinky Furnace | 1557155 | MIN Amplitude, MIN Ribbit, MAX Umbrage
Stinky Furnace | 1577155 | MAX Odour
Dusty Furnace | 1457154 | -1 Nobility, -1 Saturation

Peaceful Spadefoot | 5551115 | MIN Umbrage, Ribbit and Edacity
Subdued Spadefoot] | 4441115 | Reduced Amplitude, Nobility and Odour
Plain Spadefoot | 4441114 | Common Stock

These have all of their stats set to the same number (Common and Dreamy are in the above sections) or have a genetic key that looks like a cool staircase. I highly recommend only worrying about the all 1s and all 7s frogs first since they're useful in various machines. You'll need to acquire a Generation 1 instance of the former in order to complete the game - from which you'll then be making all the others. It's a bit complicated, so wait until you're in the endgame to pursue these species. On top of that, Soggy Marcher and Waning Bullfrog are awkward to get without a broad range of mushrooms and bases to use anyway.

Note also that 3 of the frogs on this list have every other stat reduced - so you could re-use the same method for each.

Stubby Scamp | 1111111
Slimy Scamp | 111112 | +1 Saturation
Bothered Scamp | 1112111 | +1 Umbrage

Towering Prince | 7777777
Serene Prince | 7771777 | min Umbrage
Lukewarm Prince | 7676767 | Every other stat reduced

Soggy Marcher | 1234567
Arid Marcher | 1234561 | min Saturation
Expanded Marcher | 7234567 | MAX Amplitude

Waning Bullfrog | 7654321
Drenched Bullfrog | 7654327 | MAX Saturation
Waxing Bullfrog | 1654327 | min Amplitude, MAX Saturation

Now, why should you do these next ones in a specific way? It's story relevant, here's why...
In order to reach the pondmother and complete the game, you must offer up a frog with a long ancestral line in which all stats have been raised by 1 every stage, with the exception of the last one which has minimum nobility due to being a Sublime Empyrean. This means you will unlock all of these species along the way.

Second-rate Prowler - 2222222
Sizzling Prowler | 2227222 | MAX Umbrage
Shameless Prowler | 2121212 | Reduce every other stat

Low-Grade Croaker | 3333333
Low-Level Croaker | 2333332 | -1 Amplitude, -1 Saturation
Worthless Croaker | 3232323 | Reduce every other stat

Imperfect Blabber | 6666666
Incessant Blabber | 666766 | MAX Ribbit
Perfect Blabber | 6766666 | MAX Nobility

Two very special frogs which break previously established moulds.
BEHOLD, THE TRUE BEST FROGS!
Sublime Empyrean | 7177777 | Max everything except nobility which is minimum
True Empyrean | Use x1 Rude Awakening mud on Towering Prince eggs
Sleeping Empyrean | Hatch the eggs in the dream world.


Future Frog | ?!?!?!? | Special
By clearing a fragmented memory in the west of the Gateway Nexus (snoop and sneak around, you'll find a hidden path to the source!) you can find a very cool and groovy secret area with the 30th frog. Don't stare into their genetic code too long, you'll go mad.
Future Friend | ?!?!?!? | Slightly More Special
An even more obvious reference to Mudborne's publisher, Future Friends (they have a super cool website by the way). Find these orange ones amongst the others.
Futuristic Frog ?!?!?!? | Extra Super Duper One-Of-A-Kind Special!
You can find this awesome dude chilling in its own VIP corner. You may have noticed that the local flora creates angles and seems to form a path through the water - let not the depths deter you. You WILL get the final frog variant. Cuz you're as awesome as that frog is B)

Stuck on progression and looking for highly detailed annotated maps? Suelyn has you covered!
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3452294044