@georgia in my personal opinion and perspective.

homophobia is more of a fear your same-sex/same-gender entities hitting on you, and in male case specifically the inmost fear of anal penetration (fecal fear). transphobia is kinda related but more complicated than that, it's literally falls into the "it's a trap" meme, which is kind of a shame, but overall it all comes down to "penetrate or be penetrated" and the precise subject of penetration (anal vs vaginal).

from female perspective (in my imagination) it's really more about female competition for males, again this is my (retarded) understanding that women see each other as inherent rivals, so yuri (female homosexuality) seems very contradictory to instinct, and transfems seem like even more competition.

all in all it's all just fucking retarded and i want to get out.