Kanojo mo Kanojo
Though a smaller harem than most, I'd say Girlfriend, Girlfriend is for sure one of the funnier harem comedies I've read. While harem comedies usually rely on misunderstandings for their comedy, GFGF takes the complete opposite approach. All of the three main characters are absolute buffoons, and I adore all of them. The main character Naoya is probably one of the best harem protagonists I've seen. He shares quite a few traits with another fellow harem MC, namely one Rentarou from 100kanojo, and his combined idiocy yet earnest love for both of his girlfriends makes GFGF a much more enjoyable read than most other harem comedies. Also, Saki is definitely bisexual.
Oshi no Ko
AHHHHHHH. AHHHHHHHHHHHH!!!!!!! I'll be honest, when I first picked up Oshi no Ko from a video recommendation, I did not expect to be impressed. While I did follow Aka Akasaka's previous work, Kaguya-Sama, I did not think that Oshi no Ko was going to be as riveting as it is. Oh my fucking god, I love this manga so much. The comedy, the drama, the CHARACTERS!!!! I love Aquamarine with all of my fucking heart, and Akane is best girl [but Kana is pretty cool too <3]. I love all of the characters, save for Ruby, who really felt... underutilized. And creepy. And like she's just a plot device to trick one of the love interests into getting closer with Aqua. But honestly? Ruby's character is probably the only one I could call bad. All of the others have my full heart; I just wish Ruby felt like... she belonged in the all-star cast.
Kaguya Wants to be Confessed to: The Geniuses' War of Love and Brains
Two shut-off geniuses engage in an emotional battle of wits to get the other to confess to them. Features Chika, Iino and Ishigami as side-characters, all of whom are likeable and enjoyable to read in their own unique ways. I love these idiots.
The 100 Girlfriends Who Really, Really, Really, Really, Really Love You