Speaking of Jimmy, here's another unpopular opinion: I don't believe he's gay.
I know much of the EEE fandom has made Jimmy being gay fanon: he's effeminate, he has girly interests such as playing with dolls, playing dress-up, having tea parties, decorating, and such . . . but I don't believe he's actually gay, and here's why: he's been shown to have romantic feelings for Sarah. Not only does he call Sarah his girlfriend (to be fair, he does do it in a manner that women refer to each other as their girlfriends), but he's been shown to pamper and tend to her like a boyfriend would a girlfriend, not to mention he flew into a depressive funk and even jealous rage when she developed a crush on Double D and started stalking him. On a lesser note, there's been times where we also see that he does want to be a tough, macho man when he grows up.
As far as Jimmy's girly interests and pastimes are concerned, I honestly believe it's just a phase he's going through, because I speak from experience. As I've mentioned other times, I went through such a phase when I was like three to five years old: it's not because I felt like I was supposed to be a girl, or that I felt like I was gay, or that I wanted to be a girl, or anything like that - it was just simply because girl toys and such looked fun.