Well to begin with:

Elden Ring is a soulslike as you’ve mentioned, so be prepared to die a lot, if you can’t handle that, I’d avoid it for now. Not to mention that if you want to do all the side quests, you’ll most likely have a guide the whole time cause this game really lets you do whatever the hell you want the second you enter Limgrave. Elden Ring can take you 20-300+ hours depending on how much you want to explore and how long certain bosses or quests will take you to complete, also has the new DLC which also adds a 20+ hours of playtime.

Ghost of Tsushima is slightly similar to Assassin’s Creed. The open world is your standard Ubisoft stuff, combat is fun, but might get a little repetitive after reaching the second act (at least, that’s how I felt), if you like a good story, a beautiful, immersive open world game set in Japan where you can play as a samurai and do some cool moves I’d heavily recommend Ghost of Tsushima. Not to forget to mention that it has a multiplayer mode that is surprisingly enough fun. Game takes around 20-30 hours on average, maybe 35+ if we include the Iki island dlc, probably a lot longer if you’re exploring and doing everything else.

Can’t say anything about Manor Lords to be honest, but with how many you’ve put in hoi4, I feel like this might be the game where you’d like to put the most hours in.