For overrated i'll definitely go with Riley Reid... I mean, she's hot and all (Hell, she even grew a nice ass in the last couple of months), but the way she acts and performs is just way too much... I like to think she's the Miley Cyrus of porn... Always doing cringe posts on her socials and doing dumb stuff to get attention and also always with that fake ass smile on most of her pics. I've seen pod casts that featured her before, and in those, she talks and acts normally and if she was like that on the content she puts out, she would easily be on my Top10. But don't get me wrong tho, i still think she's hot, it's just the way she acts that i'm not very fond of.
For ugly, pretty much any that look like a rubber sex doll. (Example: Moriah Mills, Aletta Ocean and etc..)
Plus, lately I've found myself leaning more towards Euro babes than american ones... European girls are less prone to undergo plastic surgery than american ones, and unfortunately, Brazilian pornstars always looks the same... Plastic tits, man legs, fake ass and excessive tan lines... I can only name a handful that looks great and don't look either like trailer trash or plastic dolls.