Which of my steam games have cloud saves?

[ProPlayerGR]

Hey guys. I plan on upgrading my rig and I will freshly reinstall windows but I'm worried about my saves in my steam games. I know that some of them save at the steam cloud but I'm not sure that every game works like that so a little help would greatly appreciated. My steam games(the ones that I care about the most):
Dark Souls 3
Dying Light
PUBG
Rocket League
Rainbow Six Siege
Fortnite.
Thanks in advance.

 

[richiestang_78]

https://www.youtube.com/watch?v=qg4rKq_2YfQ

https://support.steampowered.com/kb_article.php?ref=6736-QEIG-8941

If you click view, then Games List, there will be a cloud icon next to games that have it.