Right now, only obsidian://open: https://publish.obsidian.md/help/Advanced+use/Using+obsidian+URI
If you have other ideas, post them as standalone threads for each one. But be sure to search first in case someone else already got to it, such as: URL Scheme: direct navigation to heading
Edit: @argentum the Keen has put together a meta post for existing requests already: Meta - URL Scheme Actions & Parameters