Here are my recommendations, sorted by category
Phineas and Ferb (some romantic themes and jokes, but not very heavy-handed, Perry the Platypus is canonically ace (though it's not very plot relevant), and there are a lot of aspec character headcanons in the fandom if you run in the right circles)
Milo Murphy's Law (some romantic themes and jokes, but not very heavy-handed, and there are a lot of aspec character headcanons in the fandom if you run in the right circles)
Community (while there is a lot of plot/drama revolving around romantic and sexual relationships, there's also a strong emphasis on the importance and strength of other relationships, like friendship)
Hazbin Hotel (it's pretty heavy on romance and sex, HOWEVER, it also has Alastor, who is canonically (aro)ace, and he's strongly implied to be touch, romance, and sex averse. There are other aspec character headcanons in the fandom if you know the right people ;))
The Good Place (this is one that I'm really torn on including. On the one hand, there are some amatonormative parts, but there are also parts that emphasize non-romantic relationships, appreciation for love and humanity, hobbies, other things, etc. In the end, it's a really good show)
Doctor Who (I've mostly seen New Who, but I can make an argument for pretty much every regeneration starting with 9 being aspec. I just ignore Rose and interpret River/Doctor as a QPR)
Teen Titans (romantic relationships happen but aren't centered)
Justice League (romantic relationships happen but aren't centered)
Justice League Unlimited (romantic relationships happen but aren't centered)
A Series of Unfortunate Events
The Amazing Digital Circus (romantic relationships happen but aren't centered, there's a lot of focus on other types of interpersonal relationships and stuff)
The Hunger Games (aspec Katniss aspec Katniss aspec Katniss)
Project Hail Mary (there is STRONG emphasis on Grace's love for the world and platonic relationships)
Brave (Merida IS aroace I will not be taking questions at this time, strong emphasis on familial relationships)
Frozen (Elsa IS aroace I will not be taking questions at this time, strong emphasis on familial relationships)
The Hunger Games - series (Suzanne Collins - aspec Katniss aspec Katniss aspec Katniss)
Project Hail Mary (Andy Weir - there is STRONG emphasis on Grace's love for the world and platonic relationships)
A Series of Unfortunate Events - series (Lemony Snicket)
Dread Nation - series (Justina Ireland - main character is bi, and another character who ends up being the secondary MC by the second book is aroace)
Touch the Sky (Julie Fowlis)
The Bolter (Taylor Swift)
Crash and Burn (Thomas Rhett)
I Love Me (Megan Moroney)
champagne problems (Taylor Swift)
You Give Love A Bad Name (Bon Jovi)
Hit Me With Your Best Shot (Pat Benatar)
Goodbye Earl (The Chicks)
I'll add to this as I think of more!