This is a really helpful list, it's another rabbit hole to go down. It's most important they feel comfortable and seal well but you can tweak the tonality of the IEM a bit by tip rolling.

I use Final E tips because it tames the spicy treble a bit. Other than Final E, many people seem to like AZLA's (multiple models all a little different), Senn IE Pro tips, SpinFits (multiple models, W1 is the newest but may increase treble a bit), Spiral Dots, Spring Tips. The HeadFi IE600 thread has a lot of comments about different eartips.

You can get a lot of eartips off Ali Express for dirt cheap including popular brands if you don't mind the wait. Some like AZLA are expensive everywhere.