I just saw this and thought to myself, well, there's one area of my makeup hoarding where I seem kind of reasonable! Don't ask about lipsticks or eyeshadows....But blush, I have a sort of reasonable collection there! I have:
6 Sleek blushes (in the form of 2 palettes of 3 blushes each)
2 Wet n Wild
2 Benefit (sample sizes of posietint & chachatint, which I guess could count as lip products instead but I usually don't use them that way)
2 Essence
2 P2 cream blushes (German drugstore brand)
1 Catrice cream blush (another German drugstore brand)
1 NYX
1 Bourjois
1 Maxfactor
1 Modelco (Cheek & Lip Tint, from Glossybox, but I don't use it on my lips generally)
For a total of 19! Which is a lot but not crazy. I have 3 bronzers (fav: Benefit Hoola) and 4 highlighters (fav: Benefit High Beam) as well. My favorite blushes are hands down the Sleek ones, but actually my most used are probably the NYX (powder blush in mauve) and one of the Essence (silky touch in babydoll) because they are the easiest to do a very subtle day to day look with - the Sleek are crazy pigmented.