What kind of humor do you both enjoy? Because that really changes what you can enjoy together.
What actually works is something with enough action or mystery to keep you both hooked, but that also leaves room to chat about what's happening. "Severance" is perfect for this - it has that rare balance where each episode leaves you with questions and answers come in just the right doses. It's not super long, so it fits perfectly in your timeframe. "Fleabag" would be similar if you're into humor mixed with emotional drama - it goes by really fast.
What I discovered watching with my partner is that sometimes what matters most isn't the genre but the pacing. Something that grabs you in the first 15 minutes works a thousand times better than something "objectively good" but slow. "The Bear" fell into that category for us out of nowhere, just because so much happens in such a short time and we both wanted to watch the next episode. Avoid stuff with too many subplots that require you to memorize tons of characters, because it ends up being frustrating when one of you gets lost in the details.