Opposing teams/fanbases that we actually respect?

Giving away my extreme newness to the game here (2.5 years, came in hot after watching Ted Lasso, based in the US, whatever), but a legitimate question after all the hubub about Liverpool in the past week.

Are there any opposing teams that we have a longstanding respect for as rivals? I'm aware of Spur's major rivals (Arsenal, Chelsea) and only just came to realize that we've had some beef with Liverpool as of this week, but am legitimately curious about this and if this is even in a thing.