CBR ranks their 10 best DC SOLO character comics from the 90s. Details in the link:
https://www.cbr.com/dc-best-90s-solo-comics/
10. Detective Comics (Batman)
09. Impulse (Bart Allen)
08. Superman
07. Superboy (Conner Kent)
06. Robin (Tim Drake)
05. Nightwing (Dick Grayson)
04. Flash (Wally West)
03. Green Lantern (Kyle Rayner)
02. Green Arrow (Oliver Queen)
01. Starman (Jack Knight)