MLS is having a week of drafts: we've had Expansion, next up is Waiver, and the week will end with Re-Entry (Stage One).
The Waiver Draft is for players not eligible for the Re-Entry Draft or Free Agency, of which there are 43 this year - per the list released by MLS.
Perhaps the most eye-catching name on the list is Efrain Burgos: in part because the players are listed in alphabetical order by club, so he's at the top since his (former) team is Atlanta United; in part because Atlanta United hasn't played a competitive game yet and is already waiving players from its (incomplete) roster.