That depends on what shape you like the best.
Pretty simple really wouldn't you think?

I wear some high waisted jeans and some mid rise but usually with a longer top if my belly is going to hang over.
Elastic waist jeans work in some cases too.
My waist is around 57 inches maybe 60 I'm not sure so under the belly is not a good look for me.
The waist band on leggings always seems to end up under the belly.

I am totally out of the loop on this subject

I wouldn't see how it would.
No idea what AMAB is but with all the alphabet groups out there its hard to keep them all straight.

Interesting topic

There is a chance you will gain in guy places.
I used corsets as I gained to kind of move the fat where I wanted it.
It worked in a few places not all.
Don't worry so much just gain the weight if that is what you want to do.
I agree if you are on hormones it should send it where it would on a woman.
I was never on hormones but still ended up really fluffy and the clothes you choose has a lot to do with your more feminine presentation.

Not sure why I find this subject interesting.
You guys are so creative.
Water has got to be so heavy and hard to deal with.

I went to feabie a week after it went online and it was like I went back to high school.
A lot of hate and jealousy and drama queens.
Guys who were soo arrogant it made me want to hurl.
I left not long after I joined.
Just a waste of time IMO.

Mostly lost weight. Hot summers I always lose 20 lbs or so.

Keep with it don't stop now.