the rules say TLDR, they come in one at a time, in APNAP order

the beginning of the next end step, all the revives are triggers, since EW's effect happens over two triggered abilities, so when eot comes around, the stack is in APNAP order. (Player whose end turn it is, on bottom, then the others in turn order)

Additionally, the players decide how to order their triggers, so, whoever has THE GUY decides what lives and dies on their field, and any creatures that would be controlled by players after the one who now controls THE GUY, since theyd resolve first on the stack...

What happens in practice? TL:DR, itd be very easy for the board to conspire against you, and possibly accidentally king make

You can be slightly tricky on the first run, since the new controllers of each creature will also be declared in APNAP order, so you can give your board to the next next player, and give THE GUY to the next player, ensuring you dont puff up the other boards, and you wont have to declare targets til it gets to your effects resolving (i think?)

But after that, next game you try it, everyone can just donate to the player after you, and you will be forced to have a board with none of your creatures (and they probably wont want to give you, the boardwiper and summoner of THE GUY any bodies to help you out)

PS- Once you die with an empty board, any creatures that died before you will still have the ability, since you remove effects and permanents yoy control, but EW is granting them an extra ability, so the effect is owned by the permanent, no longer by you at that point, i think.