You can download Odzuki’s bundle from here, but the whole topic is interesting as he introduces the brushes individually and demonstrates some of them, it’s free:
Ramon’s Impression bundle you can find, along with many more resources from him, on this site and everything there is also free:
And Ramon’s Digital Atelier bundle is available for purchase at Gumroad:
Then there is also the opportunity to discover many resources here via the forum:
And if you still enjoy searching and trying out, you can discover tons more resources for Krita via the following addresses, but often the authors have copied from each other and you can find some bundle on almost every page:
https://improveyourdrawings.com/2019/02/25-brushes-and-brush-kits-for-krita/
The following page was said to be broken the other day. If you want some of it and the associated link is broken, send me a PM and I’ll upload it to my cloud:
Many of David’s brushes are also already included in Krita:
https://www.designyourway.net/art/krita-brushes/
Michelist