Idk, was bored and randomly checked 30 random qualified maps. There were two other ones which were questionable, but didn't feel like mistakes so I didn't point them out in thread but:
https://osu.ppy.sh/s/693750 - Combo colors are extremely similar in many places.
✗ (Lasse: i don't think any of them hurt readability and it's not strictly unrankable)
https://osu.ppy.sh/s/755651 - Using glitched sliders probably isn't a good idea due to the possibility of deprecation with future editor. Also glitched slider = not an intended feature of the editor so ??
✗