Total Recommendations: 3
Do I have to explain, jk they are both really crazy and funny and they both have great references.
obviously they are both Shonen anime and they are both great although gintama is probably a bit better and Gintama is a lot more popular but Beelzebub is also great they and both have quite similar comedy and references. Beelzebub is about a high schooler who finds a baby inside of a person and as it turns out it is the son of satan and now he has to take care of him. But not everything is so bad as now he has extreme strength and fighting capabilities and he literally just beats up everyone in the school, while also trying to find someone else to dump the baby on but accidentally beats them up before he can.
Although there stories might not be too similar but they both are spaghetti western and I mean a bounty hunter (Spike Spiegel) and an outlaw (Vash the Stampede) so that's great. they are both amazing anime *cough cough* cowboy bebop has better music *cough cough* and both came out in 1998 they both have existential and moral conflicts and ideas and both are interesting.