For #14, it's an interesting start, but I'd also like to see something with a san-serif font.
for 18 and 19, there are too many colors and the Silicon Valley part doesn't stand out enough. However, you don't really need to develop those, because they are not at the topof my list. I guess it's more just feedback.
21 is fun and playful! I don't care for the backwards "e" and I think you can play up the wine imagry a bit.
Thanks!