Like you I prefer games that put in the work to give the characters' actions and relationships meaning and grab the player by the feels. So I'll make sure to try the games from your list I haven't played yet.
In return I'll list a few of my personal favourites below. They're all very well written, have lots of characters that are motivated by more than the protagonist's amazing pornstar dick, feature interesting and moving relationship arcs and well made art.
Maybe you'll enjoy some of them as well:
Being a DIK - Same author as Acting Lessons (which I also really love); the scenario may seem simple and tired (guy starting with college), but the game most definitely isn't; lovely women, lots of content, fun mini games, good soundtrack, good replayability... Can barely recommend it enough.
Price of Power - Concentrates (for now at least) on a single romantic relationship between the protagonist and his returned childhood friend, giving it lots of space to grow and play out; medieval scenario; haven't played this through to the (current) end yet, but as far as I've come it's certainly a gem with many sweet (and increasingly hot) moments between the main characters.
Oathbreaker 1+
Oathbreaker 2 - High fantasy scenario; female warlock protagonist tries to survive the complicated politics of the world, finding friends and lovers on the way; long story with many twists (and a few semi-explicit sexual encounters).
Though the art is conisderably worse I'd still recommend starting with part one, as part two doesn't do a particularly good job of introducing the player to the many factions and conflicts of the world.
Pale Carnations - A bit more 'lust-focused' than the previous two games in particular, but still a lot deeper than most; fun contemporary scenario with the protagonist starting to work at a shady high-class brothel run by one of his former mentors; quite a lot of content.
Light of my Life - Concentrates on the increasingly incestous relationship between the protagonist and his two
daughters 'wards' after their mother's death; there are other women, but it's clear the game's focus is on the family. Another one that takes the time to develop its characters and their relationships slowly. As far as I'm concerned one of the paths features about the best build up (and ultimately release) of sexual and romantic tension I've encountered so far in any adult VN. The character art is unique, but don't let it turn you of if it's not your style at first glance.
City of Broken Dreamers - Already mentioned in the thread; just have to recommend it again. Bounced off of it at first, but loved it once it grabbed me. High production value.