Which games platforms are there besides Steam, Epic Store, Xbox Games?

Hi

There are more games platforms than Steam, Epic Store, Xbox Games. Sometimes I had saved some on the old computer in a Word file but unfortunately I can't remember these.

So please let me know which of you are also familiar with cloud gaming portals and cloud PCs.

Battle-net and origin

That will be a long list.

At cloudgaming Stadia is coming soon, otherwise I can think of Shadow

otherwise almost every major publisher has its own store, EA, Ubisoft, Blizzard, Rockstar, etc.

besides, there's still quite big gog

Google Stadia