Edit: This is not a valid ruleset. Mods need to discuss :)) I will update this post when the ruleset is settled.
Spiked Objects Spikes Small Hidden Spikes Big Hidden Spikes Falling Ceiling Spikes Spike Ball Brown Spike Box Purple Spike Box
Enemies Red Spike Enemy Red Spike Ball Enemy Purple Spike Enemy Yellow Spike Enemy Brown Spike Enemy Bouncing Red Energy Ball
Bosses Crusher Boss Direct Red Energy Ball Big Bear's Yellow Energy Ball Big Bear's Paw Big Bear's Paw Wave Spider Web's Yellow Energy Shot
Miscellanious Falling Red Block Crushed by Crate On/Off Purple Block Electric Wire Cannon Pit Fall Milk Saw
Just a quick note: Boxes itself can't kill you, so "Crushed by Crate" is impossible (suffocation itself isn't though and I'm going to guess we mean the same thing here, however I'd like to keep both box- and platform-related suffocation under one name). Let's sort out naming and what is different first and then there'll be a new category, All Unique Deaths. Also there's three different hidden spikes, since two have one semi-hidden stage and one doesn't). Die to all of them in an AUD run (and die to suffocation!).
By the way, if you want to run All Deaths, you should look at this guide: https://www.speedrun.com/cb_ce/guide/1hgsp