Seems like every week over on GamingOnLinux there’s an announcement of a new launcher.
Personally I only use Steam & Lutris. Lutris for my gog games and BattleNet, Steam for everything else.
I don’t know of a good reason to use Heroic, or any of the other new ones over Lutris / Steam, but maybe I’m missing out.
@Jarmer
For Steam, there’s not much of a question; they have a native app that gets the job done.
For Epic and Gog, Heroic makes a good launcher in general.
For Amazon games, I use the “nile” launcher.
As for EA, I’ve managed to install the EA App manually to a fresh 64-bit prefix; I just made sure that I run “winetricks d3dcompiler_47” in that prefix, and that DXVK is installed.