Rebecca Sugar's a complete fujoshit sure but she ain't breaking ground on any stereotypes and her only backbone moments are using crappy stereotypes for GLAAD points.
Bubbeline is literally a butch emo girl with daddy issues shacking up with a neurotic/controlling lipstick lesbian for LGBTQ+ tropes. Plus Sugar copied the stereotypical emo girl deviantArt trope of the emo girl loving a worse version of their dad.
Garnet's the too cool 4 you butch made up of two codependent lesbians who can't spend a day apart without being conjoined at the hip, even when they have an argument.
White & Pink Pearl are subservient lesbians who lets her butch (Rose/PD), walk all over them.
Amythest is a just a hedonist and honestly acts more like a depraved bisexual looking for self-destructive gratification 24/7.
Peridot/Lapis is an actual toxic relationship where Lapis is emotionally distant/abusive to Peridot while Peridot acts like a submissive battered housewife. Wouldn't be surprised she saw Deku x Bakugo shipping and thought it would be so brave to make that into a Yuri ship.
Effectively every non-conventional/heterosexual character in SU is a neurotic bundle of mental illness that makes /r9k/ & /b/ look sane. Ironically for as much as Sugar gets GLAAD accolades for being stunning & brave for the LGBTQ+, SU proves the stereotypes of LGBTQ+ types all having mental illness correct. The only person with a good head on his shoulders/not a neurotic mess is Greg, the most heterosexual guy in the show that was able to make a leader of an all-lesbian alien race reject the LGBTQ+ and die for her heterosexuality.