Finally finished the last of these videos, and I've got...
Wait a minute. I started the save file I did this in AFTER the most recent update, but I've got 731 babies somehow! And I have no idea which 5 bunnies I had stumbled upon that these videos hadn't! Remember, two of the original 728 are not currently possible.
Of course, there IS that wonderful "copy baby list to clipboard" function, but I don't think trying to sift through 731 lines to find 5 that aren't shown in the video is a good idea for a single comment.

Unfortunately, E-6 to E-7 is no longer possible by the method displayed. The last dig spot is now Iron Ground, and thus not diggable.
Fortunately, I was able to figure out an alternative to make that match work. Ironically, it involves the Iron Ground in the top-right corner. That leads to a dead-end path, but that end can be unblocked by digging above it and the tile to the right of it. Put a hole there, chase the E-6 bunny into that area, use the pickaxe to chase it into the hole.

@Xcyiterr Thanks for the information, at some point I will probably do an update to this guide if enough buns have outdated strategies.

update: it's still possible, just now by sending both buns through the tunnel at the top

C-7 to S-7 to S-8 is no longer possible in the way showcased in the guide in the latest patch, as the C-7-1 x S-7-1 stack now turns left instead of right when against the dead end, and no longer goes down the hole to S-8

@lapogne36 You're right, my bad! Thanks for the guide anyway :)

NE?-2 requires you to break the bun tunnels, that is a necessary step for NE?-4 too.

I added it, next will be the babies, it may take some time to time efficiently order them.

are you working on the glitch bunnies now? still need help with that one on floor 2. also, nice guide.

E-8 is home capturable
But it's not something that can be done by just looking at one floor.