Just in brief, I'm not sure we can generalize attraction like that. Preferences and such are pretty personal. Any two Men who are attracted to other Men are not necessarily going to be attracted to the same things, you know? Same goes for any two hetero folks who share a sex or gender. That's why we have folks who have a preference for big fuzzy men, or pretty feminine men, or other things entirely. Also, as a personal example; when I assess dudes or gals for attractiveness, I tend to share plenty of preferences with my lady and my dude friends, while also having some things that are more me-specific. It's just anecdotal, and I might be an anomaly, but I don't see that pattern in my life, or the lives of folks around me.
I'd suggest it's not so much a trait or a pattern common to all humans, or common to groups based on sex or gender... but rather, it's based on cultural upbringing (what we're taught is Attractive by peer interactions and whatnot), and our personal preferences. If you see shared attraction among groups of guys or gals, that could well be them reinforcing it with eachother. Because of the way society tends to segregate people socially based on sex, during our developmental years (guys are encouraged to hang with guys, gals with gals, and ne'er the twain shall meet), you're going to end up developing pockets of similar opinions, which don't necessarily agree with the opinions of other social micro-groups.