Your favorite Omegaverse (A/B/O) BL manga/manhwa/manhua?

If you can recommend a manga where one of the characters tries to hide their secondary gender (only to be exposed later) that would be awesome, I am a sucker for that trope!

Also anything with a lot of hurt/comfort, nesting scenes, or non-traditional A/B/O dynamics would be appreciated! :)

Here are a few of my favorite omegaverse BLs, for reference: