i've gone pretty makeup free since the pandemic and when i do wear makeup it's not for very long so can't really comment on longevity! but these two have served me well:
rimmel extra super lash - £2.90 on amazon
boots 17 extreme extension mascara - £4 in boots (reminds me of glossier lash slick)
i also have small ish eyes so don't get on with big spiky brushes. best way to apply these two is to put the wand at the root of the lash and blink onto it. when new the boots one literally takes two or three blinks for a full coat! if i'm layering coats i also use a silicone spoolie brush to separate my lashes
I use the L’Oréal tubing mascara, it’s in a red and white tube, comes off with warm water but doesn’t flake. I also get blepharitis and this doesn’t create the issues for me that normal mascara does.
Another vote for this. I’ve gone between Dior New Look and Blackout for YEARS but bought this last min last year and my eyelashes are looking super long I’ve just bought it again.