Just replying to a post up above about loads, I'm running the Series X version right now and it's definitely not the fastest with loads. I'm losing about 3 seconds per level to the PC version (the WR run at least). Not sure if this is because of the version difference, or if it's the newer patch with DLC. I've noticed a few other small changes like health jars in different places.

Yeah I'm a bit confused about the categories too. I love the DLC levels but Hidden World% involves what exactly... I'd like to imagine it just involves playing all the levels in the Hidden World. But after they are unlocked / completed? Before? In addition to main levels? If you had to watch the opening cutscene it would take half an hour to set up the save file each time. Also unsure if 100% includes the Hidden World. The "all levels" category doesn't even mention the Hidden World. Hopefully we can get some clarification because the game and extra content is great. =)