No one likes United here because they were the Yankees when almost everyone on this board got into English football (2000-2010). No one, particularly the stereotypical American who follows soccer, wants to be viewed as a bandwagon jumper. Hence why City still isn't very popular on this board despite dominating English football for a decade. City was too shitty to support (other than Huck) before the takeover and almost immediately became too good to support after the takeover. They were Villa and became United almost overnight.
Liverpool is popular because they have a very compelling history and supporting them would not be viewed as bandwagon jumping because at the time they weren't winning very much in relation to Arsenal, United and Chelsea who dominated English soccer in the 00s. A calculated yet justifiable glory hunt.
Chelsea is popular here because they were the emerging London-based team with the better future compared to stale Arsenal (for those Chelsea fans who go back to the club's founding in 2003) and Pulisic (newish Chelsea supporters). Plenty of cunts who frequently travel to London (West London, specifically) and name their message board handle after PJs chose Chelsea because of its convenient location. They are basically City with better shopping and restaurants. Easy to get to games from the US, will win plenty of trophies and don't have to deal with the riffraff elsewhere in London while doing it. An extremely efficient glory hunt for the London tourist.
Tottenham is popular for all the reasons Bill Simmons summarized when he was interested in soccer for about 15 minutes in 2005 or so.
Arsenal is popular because they played a very attractive and cosmopolitan brand of football under Wenger and were the foil to United (again when most people originally selected their team). They are now what Liverpool was (a team with a compelling history that will probably start winning trophies again at some point) and Liverpool is now what Arsenal was (the foil to the Yankees). Accordingly, Liverpool and Arsenal continue to pick up new fans but for different reasons.
Again, to summarize, Liverpool (Tottenham with history then, Klopp fanbois now), City (Huck), Tottenham (see Simmons article), Arsenal (Wenger fanbois then, Tottenham with history now), Chelsea (loathsome cunts and newish USMNT fans).