So far the only one I can think of as a potential fit is Pekoe. And given there's so many villagers, I'd like a little insight from you wonderful people!
I can share my list of potential zen villagers. Not sure how many of them will fit with your flower theme as well, but some of them should.
Snooty: Blanche, Greta
Peppy: Pango, Pinky
Normal: Annalisa, Gladys, Pekoe
Uchi: Hazel? (I couldn't really find any uchi villagers that fit the zen theme.)
Cranky: Hamphrey, Rizzo, Walt
Smug: Ken
Lazy: Chester, Drago, Wade
Jock: Flip, Genji, Snake
You can use bamboo and hydrangea: "Hydrangea is a genus of 70?75 species of flowering plants native to southern and eastern Asia (China, Japan, Taiwan, Korea, the Himalayas, and Indonesia)"
I notice no one mentions Opal or Greta.
Both have very zen/exotic themed homes.
Also agree with those that say Pekoe, Margie, Marcel, Kabuki, Hamphrey, Annalisa, Genji, etc.
I actually picked Hamphrey as a final villager for my third town partially for his house and partially because I grew up with Hamtaro hamsters being a thing and he reminded me of Boss. >.>