Yeah Persona is probably the more relevant 'normie' JRPG nowadays, I frankly try, and seemed to have succeeded, in ignoring its existence now after Persona 5 blew up and every dumb faggot compares every game to Persona 5 (Especially when the TWEWY sequel was coming out which made me MATI).
To explain why YYH isn't acknowledged is simple, to some of these people YYH's manga is older then they are, and the anime came out when they were probably six or something. DBZ is just too mainstream even if DBZ is about as old as YYH, and MHA is effectively this generations Naruto. It is such a shame that One Piece had such a terrible start in the west, because despite its length One Piece is to me the closet long running shonen series that deserves its immense length compared to all others like it.
Also YYH is a fairly weird story within its genre, it is a typical battle anime with a huge focus on a pretty grounded (for a show where you can blast walls with your finger gun) coming of age story told from a young delinquent man's perspective as opposed to a plucky hero's journey like Deku who is effectively a nerd with a big heart which is more easy to understand for the typical anime fan. So it isn't as relatable or as empathetic in current year where being an asshole like Yusuke is considered a sign of a bad character instead of simply being who Yusuke is. I can imagine many woketards not giving a fuck about Yusuke's death because Yusuke is a colossal asshole at the start of the show and something something Keiko is being abused because Yusuke looked up her skirt and treats her poorly because he's an emotionally stunted mess.
Kuwabara has also aged like milk in today's political gender focused landscape due to Kuwabara being very intentionally a very standard 'hero guy who saves damsel' hero on the surface with how he works off Yukina. Though I unironically think Kuwabara is my second favorite of the main four as I've grown up even if he gets fucked over in the last major arc. Kuwabara and Yusuke are characters that I feel grow better with you as you look back because they really show the coming of age of two different yet similar young men. Kuwabara may be a jobber about 80% of the time, but he's the GOAT of all jobbers.
I don't even hate current age anime like most people seem to, but boy do current age anime fans really do not even try to find anything these days.