Maybe an LG V40 if you find one and they're into the unique features it'd have (triple camera, with ultrawide and 2x zoom notably, and the ability to hack the Google processing onto it so you could get Night Sight; 3.5mm headphone jack). I don't believe the display has the issues that the V30 (and Pixel 2) did, although I'm sure the S9's display is probably better. Samsung is better about updates though, and LG's quality has been spotty although I don't think there's been any glaring issues with the V40. I believe the V40 wasn't great on battery life either. The LG G6, G7, and V30/30+/35 might also be options, although they have less to warrant them over the V40 and arguably have outright flaws.
There's some other possibilities (if its an option, should be able to get a deal for a new Pixel 3a), but I can't think of too many of them.