Maybe Op Art for the first one. It isn't quite, but near enough.
Definitely Art Nouveau for the 5th. I don't see Art Deco.
I love the red one, but I can't think of a good description. It's meadow plants, but I don't suppose anyone searches for that. I can see dandelion and bindweed. One looks like cow parsley, but isn't quite - something similar. It's very trippy!
For the last one, contrast collar and cuffs is worth mentioning. Other than that, it's a floral stripe, can't see much else in that pattern.