Even among HBO titles, I don't think it comes close to being on top. Mare of Easttown, Barry, The Last of Us, We Own this City, House of the Dragon, and Watchmen are all better in my mind. Maybe even The Outsiders as well. Granted, with the exception of Barry, all of those shows are either single season standalones or only have one season out so far. And outside of HBO, I think Andor claims the crown of the best TV show of the past 5 years (and nearly 10 if it weren't for the fact that True Detective season 1 sneaks barely into that window).
While trying my best to avoid spoilers for the folks only partially thru Succession - nothing ever happens. Sure, stuff does happen within an episode, but until season 4, it never matters much beyond that episode. It's like a sitcom where, regardless of what happened last week everything is reset back to normal at the start of the following episode. I know its most ardent supporters will call it a character study and claim its not a "plot driven show," and that can be fine in theory. But after a while it makes it feel like nothing that happens in the show really matters. There's a whole spider web of dangling plot strings that they'll pull on occasionally, but they never get resolved nor do they meaningfully steer the plot of the show as a whole. There are side arcs that are abandoned as soon as they pop up (remember when Roman blew up a rocket? No worries, nobody else does either). Hell, even the central premise of the first season (Logan's dementia) is pretty much entirely abandoned after that season. Season 4 bucks this trend for a while during the middle of it, but it falls back to old patterns by the end.
Succession does have the best music of any TV show recently. Hands down.