I agree with Theta Sigma that in-universe Benchmark would probably be the new It Boy, going by stuff from the Letters Page.
Makes me wonder how many heroes have groupies and their pics featured in teenybopper and other celebrity glamour shot magazines a lot.
But yeah, TakeWalker was like "I don't have a list" and I was like "*shifty eyes* I do..."
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I agree that Ambuscade definitely deserved the "Hollywood's Favorite Pretty Boy" award, even if he's a jerk.
Powerhound, I counter you by saying I think Baron Blade himself is pretty cute. I have a bit of a soft spot for mad scientist types in general.
With Argent Adept, "redheaded pretty boy musician" is just not a description you can argue with, I feel.
Bunker actually has a rather pretty face, the times we see him out of his suit. And "clean cut military man" is often a big attractiveness factor in general.
I actually think Captain Cosmic is pretty cute; I like the whole Cuddly Space Dad vibe and accents are always a plus. Especially when he's wearing that boss jacket in his PW variant.
And Setback is basically a human puppy dog both in looks and personality. Even though I'm not usually into ditzy guys, I still think if I could pick any guy in the Sentinelsverse to date, it would be Setback.
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Picking out which ladies are cute is a bit more awkward for me because most of them are teenagers or not much older, and I am... not. :P
But Nightmist is quite pretty; especially check out her "normal" self on the artwork for Regression Darts.
I will say I would almost certainly have a crush on the Matriarch when I was younger; she's so elegantly pretty.
Sky-Scraper's probably my most fave Sentinels lady, though. I agree she's so adorable and has a sweet smile. :D