Can’t say I have no interest in these games (I play Apex occasionally and been playing a bit of Dead by Daylight recently), but I certainly wouldn’t have interest in playing them on a handheld.
If you are interested in them though, worth remembering that Valve are releasing an updated Proton with the Deck. They were quick to say they were working with anti-cheat developers to improve compatibility. I would imagine these are all games that they will be making sure work, likely at launch. There are only a few anti-cheat software used, so I imagine getting these working doesn’t necessarily mean fixing each individual game.
I hadn’t heard of Proton before the Deck, but it’s quite impressive how well it works. I always assumed Linux was a mess for playing games and I was massively sceptical when Valve said the Deck would be Linux based. Proton seems to make it a non-issue.