I just recorded a few jumps only doable using jump cancel, just to look for myself what I can do and show what's doable with jump cancel.
Enjoy!
Music: Castlevania Bloody Tears Remix 2008 (linked in description on YT)
Details about the Jumps:
1. Simple invert on height 0
2. 1.5 invert, right side has blocks
3. Invert, upper spike is moved down 2 pixels
4. Spike up, moved in 8 pixels
5. Spike down, moved in 6 Pixels
6. Spike left, moved in 12 Pixels
7. Block
Note: This was done in Yuutu engine