I'll rank them by species rather than by species + colour since that would take me faaaaar too long to think out.
S-Rank: Cosmos, Mums, Roses
A-Rank: Pansies, Windflowers, Tulips
B-Rank: Hyacinth, Lilies
C-Rank: Lily of the Valley
S-Ranks:
- Cosmos: Honestly use to be my least favourite but I'm rather fond of how they look in New Horizons, especially the colours. Black cosmos actually look like the proper black cosmos and the shade of the pink cosmos they used is really nice.
- Mums: Literally only in S-Rank because I like Chrysanthemums and they have the first green flower. Sue me. >_<
- Roses: Honestly, yet another flower I wasn't too big on, mostly because of the blue rose frustrations caused in New Leaf but I'm really liking the vibrant colours that roses have, especially pink and orange.
A-Ranks:
- Pansies: Honestly, I was really hoping they'd add more colours, namely pink. If they added pink, pansies would be in S-Rank without a doubt. I'm also not big on the shade of orange they picked, but I still like pansies because they were always my go-to flower in New Leaf.
- Windflowers: These are basically pansies, but done right. They would be in S-Rank if they were just a bit... smaller? They're too big to be honest.
- Tulips: Generic flower, but they look nice. Pretty much all to em'.
B-Rank:
- Hyacinth: I love their colours, I just don't really like their design. They just don't 'click' for me, though pink and orange hyacinths look amazing.
- Lilies: Basically the same as Hyacinths, but replace orange with black, lol.
C-Rank:
- Lily of the Valley: Honestly? I don't like them. Generic looking compared to other flowers, and everyone wants them or overuses them, tbh.