the maps are the default hl2 maps so they dont need to be ported. Let me explain a few things that might help. VTFs are straight up textures. VMTs are material files that contain material properties for the textures, such as the base texture, headers, detail textures, cube maps, normal maps. etc. Blends are special VMTs only created for maps that combine 2 or more VMTs into one blend, like grass-to-sand or grass-to-gravel for example.

Autumn life 2 is a retexture mod, so naturally it replaces only the VTFs and VMTs. This means that any map on gmod that uses textures from HL2 will work with my mod because the textures themselves have been replaced. However, Wasteland reborn uses blend edits. The textures themselves and the material properties aren't changed, meaning only maps that use the blend replacements will look wastelandy. Pretty much all gmod maps will have their own custom blends, meaning if you want gm_fork for example to be compatible, you will have to manually add forks blend replacements to the mod for it to work. Its not particularly hard or anything, its just mind numbingly boring and tedious

*DO THEY ALSO USE BLEND VMTS God I hate mobile

How hard would it be to port the wasteland maps, are they also blend VMTs (I have no clue what that is)

if only my hammer knowledge extended beyond basic brush work ...

my autumn life mod will be easily portable with some adjustments since its just texture replacements. wasteland reborn however will be extremely difficult because its just blend vmt edits, meaning i will have to edit possibly dozens and dozens of more blends to make it work properly for most maps on the workshop