Bloons - BTD 6
Bloons based on how annoying they are in the game when they appear. All bloon types are together unless one type is significantly more annoying than the other (i.e. BFB appearing on 60 is usually more menacing than the fortifieds on 79 since you have to perpare for the ZOMG on 80 anyway).
Credit to https://bloonswiki.com for the images.
