chinese alligator please

That sounds good. I'll put it on the list.

what about the American crododile?

So far, black caiman is on the list. Kinda want to make at least one crocodile, yet nile's off the list.

will the other crocodilians be made as poseables

Well, I just fancy the word savanah and wetland.
Fox shouldn't be very difficult, I'll try.
Also, all crocodilian but gharials can take their belly off the ground and walk IIRC.

Alright, this one I gotta say has been done pretty well! Looks really fun to pose as well! :D It makes sense that the posture would be similar to the saltie and the gharial :)

Although ironically it’s your alligator who is accurate with the belly-off-the-ground stance, in real-life, crocodiles move with they’re bellies touching th e ground XD

If you are open to suggestions on your next thing,....perhaps maybe a red fox?
Despite the name they actually come in several mutations! :) - https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Vulpes_vulpes_colour_variations.jpg/1920px-Vulpes_vulpes_colour_variations.jpg

And I gotta note something regarding the biomes ^^;
Savanah and Grassland are the same biome ingame
Same thing with Wetlands and Aquatic (although aquatic may also coincide with marine biomes since the polar bear uses it as well )