OWL CAT Games; Pathfinder Kingmaker, Pathfinder Wrath of the Righteous, Rogue Trader

The party operates from a base but usually has to camp on the road a few times. It is mostly isometric compared to BG3, being not a real 3D, but there are some limited 3D elements. You have complete control over what you do and can be as evil or sweet as you want. Note that the ruleset and progression are very complex and require some basic understanding and getting into. It does pay off very nicely though. You can do pretty much whatever you want with the builds at lower difficulty levels while higher difficulties require more careful approach when you should try to stay consistent with your party development and look for items and consumables that fit your agenda.

There are plenty of guides and reviews around for both games. I think, Moritismal has some decent YT videos for beginners, and Fextralife, Wergilia, and cRPG Bro have more advanced guides going really deep into the details. The games are very complex and offer essentially endless options for classes/multiclasees, items, consumables, and quests, which work (or don't) in various combinations.

You can play either turn-based on real time with pause. IMO, turn-based is recommended for the starters so that you have general idea about what is going on.

Both games are very long and may take up to 150 hours or longer to finish if being thorough.

I have around 500 hours in Kingmaker and close to 700 hours in WotR, so obviously both games are highly recommended. Just keep in mind that both games are not very forgiving, and your actions have sometimes very dire consequences.

Kingmaker runs on a timer, which is fairly generous if you have even a slight idea what you are doing. WotR is more generous with the timer, which can be largely ignored, and is generally a bit easier game overall on medium difficulties, while offering way more diversity in character and party building.

If you want to try, it might be a good idea to get some GOTY editions with all DLCs because these add substantially to the overall experience.