General

Not about fatties per say, but Pump up the Jam.

"Fat" by Weird Al

A lot of Doja Cat- Juicy and Moo would kinda be another

Also Lizzo- Tempo and I’m sure she has others.

Big blonde and beautiful from hairspray

Whole Lotta Rosie, Unskinny Bop, Big Women.

Big Girl (You Are Beautiful) by Mika.

Hard Out Here by Lilly Allen

Just a Lil' Thick feat. Lil Dicky

Yup - Young Gravy (I used lyrics before)
"If that chick can clip her seat belt on the first try, then she ain't my type 🚫
I need a ✨thicky✨ !
Need a bitch with an ass so fat that it makes it hard to live her life 🥞)

That Big Booty Bitches song lol

I think that is it for now that I can think of not mentioned.

Edit because i googled the lyrics

Biggie Smalls by Cupcakke.

I like Mrs. Goldfarb by Alan Sherman. Definitely a feeder's song.

Priscila Block "Thick Thighs"