Regency Bonnets.
Since these bonnets are very similar to the bonnet the Beverly Dahl doll is wearing, I think it is safe to say these are Beverly Dahl creations as well. One has a price tag attached of $23.50, with a purchase year of approximately 1995.
The Jane Austen Museum in Bath has a fun article on trimming Regency bonnets on their website:
https://janeausten.co.uk/blogs/home-and-hearth/trim-your-regency-bonnet