I disagree with Pocket about Krillin and Tien. Even though Tien has more variety, most of that can be countered, especially since Krillin has seen the weaknesses of his techniques. Tien, on the other hand, has no counter to Solar Flare x100 (in fact, he's more sensitive to it than most because of his three eyes) and Kienzan, which Krillin can fire in rapid succession as of Super and even redirect (a bit like Freeza). Then there is his superior agility. So unlese Krillin gets hit by a Kikoho (which has been nerfed in Super anyways), he'd likely win in most scenarios.
I agree with the rest, though.
Hit VS U7 gauntlet
-Equal BP
-No power-up through techniques/transformations
-Hit can't use any other technique than Time-Skip.
Krillin
Tien
Muten Roshi
Piccolo
#17
#18
Freeza
Gohan
Vegeta
Goku