I am the developer of https://mindsaha.com/ that aims at combining mind maps, notes, bookmark saving and a simple task management as well. I currently do not support screenshots, drawings though.
If this is something you are curious about, do let me know, I'll be happy to provide you an early access to try it out.
If this is something you are curious about, do let me know, I'll be happy to provide you an early access to try it out.