More videos:
City Run
Contains BMD. However, given some of the ducking/sliding obstacles, this may be intentional. I still think it detracts from the level though.
Mantreopolis
See the vid for which words have typos.
Fun Fungus Function
See the vid for which words have typos. I also recommend raising the metal circle just after a thwomp (see the video for what I mean) but that's just a recommendation.
Baker Street
As you may remember from primary school (or may not), sentences have to start with a capital letter and end with a full stop (period if you're American), question mark, exclamation mark, or ellipsis. Also, the hammer bro replacement tends to blend in with the background.
Sheath Courage Returns
Still literally unbeatable due to a bug, even in the updated version you sent me (which didn't fix anything except the invisible wall showing correctly. Getting the leek still doesn't trigger the end of world cutscene. The level itself is fine.
Assuming SAJewers doesn't post a fix himself, I'll try out Joseph Staleknight's fixes tomorrow.