I'm going to shamelessly admit that I am a member of the Flat Justice camp, though i've got nothing against larger chests either.

That said I've found very few games (on itch.io or elsewhere) that cater to my preference. Has anyone made any sort of list/collection for them that I could browse?

Or just have suggestions on good ones.

Apologies if this post breaks any rules I'm not aware of, I'm new to the community side of itch.io

Can some one help me to find a game of nsfw is about a girl who ate cake and beggin fat :(

If you select a tag in browse you will see at bottom left some public collections. Chances are, that people put similar games on a collection.

So find any of the games you like and look what tags are commonly used. The suggested tag box is not exhaustive. On the other hand, just because a tag exists on other sites, does not mean, that people will use it here. So go on game pages of games and click the links in the more information box.

Things like body shape are seldom tagged. Activities more often. So there is a eating and stuffing tag used. There is no slim tag, but some people use fat as a tag.