Apart from sharing an identical plot, these manga have many character similarities (Harima Kenji/Misao Zaitsu, Eri Sawachika/Kei Enomoto, Tenma Tsukamoto/Koyoi Bessho, etc), not to mention that in both manga the relationship chart is pretty intricate.
Both are highly enjoyable school comedies with plenty of love triangles and misunderstandings.
Same comedic, high school life centered on a group of friends, though Hyakko isn't quite as eccentric as School Rumble gets. In both, the students in the high school each have their own idiosyncrasies.
The best thing about these two manga is the abundance of interactions between main characters' group and their schoolmates. While many school comedy series focus almost exclusively on a small group of characters, Hyakko and School Rumble prefer to involve many characters in their shenanigans. The result is a very lively brand of comedy.
If you're looking for school comedy series where the students outside of main characters' group are more than faceless background characters, then these two manga surely won't disappoint.
These two high school comedy series don't have very similar premises, aside from both having a "gangster" element to some degree, but their sense of humor is similar. Especially notable is the side comments from their respective mangaka, although School Rumble does this much more often.
Both of the mangas are very similar in their approach to the genre of comedy romance; they both include a lot of characters which gets you to know most of the school, they both take care of the romantic relationship of the side characters. In both mangas, its hard to distinguish who the side and main characters are, but with tsurezure children its a bit harder. And both of them are very funny.
If you want a shounen romance comedy manga, but you don't want the always the same harem manga, one of these should surely be your choice.
Both protagonists are really funny school delinquents. The background of both stories are schools and involve characters from all the school, not only one boy with a lot of girls in love with him, everyne in the same classroom, and that's what makes these come out among the others!
Both have similar main characters--Harima and Hanamichi are both delinquents who will go the extra mile for the girl they love, and their comedic appeal is similar. Basketball is also a common theme in both, but Slam Dunk obviously showcases the sport more than School Rumble does.
Both center on whirlwind love stories; complete with double love triangles, unrequited affections, and grandiose emotionality on part of the afflicted characters. They both have a similar tempo, in terms of story and character interactions. Both are romantic comedies, though School Rumble has more elements similar to a situational comedy, while Gatcha Gacha comedic elements are more derived from the romantic plots. School Rumble is also much lighter in tone overall, and features a larger cast of characters. Relatively, Gatcha Gacha has a more intimate focus on a finite cast, and a more serious undertone guiding interactions.
Some people may not agree, but I like these two manga because they can be both funny and serious (although Kare Kano is more serious while School Rumble is funnier) and they don't just focus on the main characters or one love triangle, but multiple characters, such as the main character's friends and their love/issues.
If you're looking for a similar OTT humour style, then try School Rumble! Both have a romantic plot, are relatively episodic and subvert romantic cliches such as the high school mangaka and love misunderstandings tropes.
It's similar to its genre and the characters. Both have "delinquent" protagonists whose wanna change the way they live. Both series have a similar humor, but School Rumble shows some amount of randomness.
These mangas have quite an unusal take at school. The similarites are maybe not so obvious, but the "feel" is very similar. The strangest situations arise from nowhere and both have a very strong cast of recognizable charaters. Both also have quite some witty dialogue.
Both are shounens, comedies, school, rom-com, and a guy who is drawing manga in order to get the girl they like. But School Rumble (as the title states) is more based on school life while Bakuman is more about manga.
Similarities include: love polygons involving students attending the same school; similar character designs and aesthetics (particularly the main male character); and a comedy narrative that sometimes mixes in drama to progress plot.
Both titles have very distinguishable comedy in that comedic narratives often involve more than one character and sometimes span in locations away from the school setting. Do note however that although both titles have drama, it is far more present in Ouran Koukou Host Club than in School Rumble.
School comedies with nonsense but hilarious situations that will sure make you laugh. Also, Mokocchi and Harima remind me of each other: they just want people to like them, but nothing goes as planned so they end up failing at everything they do.
Kodomo no Omocha, also known as Kodocha, is the more polished, mature version of School Rumble. Wherever School Rumble failed (ex: ending, lame mangaka jokes), Kodocha picked up and illustrated it in a new way. It's a must read for anyone who felt very disappointed after completing School Rumble.