Langford: as others have said, a bit of Tyreke Evans. Maybe a bit of Joe Johnson too. Obviously have to see how his shooting comes along. Tyreke took until 2016 to become a respectable three point shooter, but sadly that's coincided with him becoming injury-prone.
Grant Williams: I see him as potentially being a Paul Millsap, but with better shooting from deep and passing, and obviously considerably less scoring and probably a few fewer rebounds. I clearly don't see Williams as an All-Star, but maybe Denver Millsap.
Carsen Edwards: like the Patty Mills comparison, but I think Edwards is considerably stronger. I also think Edwards' ability to catch fire is more like Jason Terry's (think of this kind of game for reference:
https://www.basketball-reference.com/boxscores/200012120ATL.html).
Tremont Waters: really hard to find a comparison for Waters. Some blend of Strickland and Kenny Anderson, but worse and smaller than both of them, lol.
Tacko: Francisco Elson with more blocks? And 6 inches taller?
Strus: poor man's Anthony Morrow
VP: early career Javale McGee, with less bounce