What is this game's art style derived/inspired by?

[Tokiw]

I really like the art style in this game, and I want to learn a little more about it. Does this style have a name? or historical examples of that type of "Medieval Storybook" I could research?

[Gamertime]

medieval botany books mostly but also medieval bestiaries, other medieval manuscripts

https://www.facsimiles.com/worlds-of-wisdom/genres/botany-herb-books
https://en.wikipedia.org/wiki/List_of_illuminated_manuscripts
https://en.wikipedia.org/wiki/Voynich_manuscript
https://en.wikipedia.org/wiki/Aberdeen_Bestiary