Divinity Original Sin 2 is a much easier title to recommend to people. Especially those looking to get into the genre. It's shallower in a number of ways, but it's overall presentation and easier to grasp systems would make it breezier to get into, and it has a number of goofy things in co-op which are actually not that bad. People all over have lauded that game as the be-all end-all... but I know my truth.
Shortly followed by Fallout 1, Fallout New Vegas, ATOM RPG, and Planescape. Less focus on combat, more focus on overall world building, consistency, lore, atmosphere, and to a lesser degree - plot. But by no means shallow or lacking in complex character. Fallout 1 and ATOM RPG can play almost like an adventure game where having a particular item - be it a light machine gun, allows you to progress. Fallout New Vegas can be more or less combat-heavy, and whether its combat is good is debatable, but the game paces a lot better than any of the other 1st person Fallouts.
The likes of Pillars 1 and Underrail follow. More complex combat, more time to get into the story, more things to keep track of overall. And it's not necessarily easy to get into. I like both of these games a lot, but I can never recommend them easily to people unless I ask them what are they looking for specifically. I think I'd put the Baldur Gates here.
And after that come Deadfire and Kingmaker. And it's partly because I don't really have a concise impression of either of these games. They are lengthy, but it seems their length is due to excessive inflation of activities. Long combat time for Deadfire, a lot of travelling time for Kingmaker to name but one each. Not shallow games by any stretch, but the difference I am experiencing with these two to some of the other ones I've mentioned(not DOS2, mind you) is the same as eating two plates of expertly cooked pasta, but made with different quality of ingredients. You can see the skill that went into each of the dishes, it's just that one of them doesn't taste as good.