This has traditionally been my favorite type of anime basically ever since I first got into anime, but lately I've just felt like I need it more. Chances are that most things that people would mention in this thread are things I've already seen or tried, or things I already plan on watching — but honestly, just mention them anyways, because they could be useful for someone else, and I'm not opposed to rewatching or prioritizing things.
Still, I might particularly like some more "hidden gem" type recommendations.
Hell yeaaaaaah honestly
I'm waiting on watching Yuru Camp's third season but honestly from the seasons I have seen (plus the movie where they're all grown up) it's definitely one of the GOATs. Non Non Biyori I've seen de pied en cap, it is 100% my favorite anime of all time. Mitsuboshi Colors, which I'm assuming you got autocorrected on, I saw just recently with my mom and aaaagh it is such a banger, I plan on watching Hitoribocchi as well since that's the same original creator. Aria I have seen the first season plus half of the second season, and I have two volumes of the manga in the original Japanese, it is such a great and imaginative world but it's also a fairly long series isn't it. Amanchu I saw by myself recently-ish and honestly it was kinda middle of the road for me, but maybe I was being a bit harsh though.
Otherwise, New Game and Do It Yourself are already on my planning list, and I am especially excited about Do It Yourself, because as you say, banger OP, and it has such a unique and pretty style, right? And I have heard of Tanaka-kun and the monster girls one but I hadn't put them on my planning list until now.
Which leaves just Comic Girls and Amaama To Inazuma. I don't think I've heard of either of those before, and that clip of the latter is very cute and catchy. So it seems we are eating well aren't we folks