As far as I'm concerned Mad Men is the highest art that television has yet achieved. It's hard to even think of a runner up; maybe Better Call Saul or True Detective S1.
The Wire - good for its time; one of the first 'good shows'; doesn't actually hold up today though... what subtext it attempts is too overt. Almost like a documentary, but who needed examples of organizations being corrupt to get it? Sopranos is about the same, but a bit better.
Succession - Entertaining but ultimately shallow; not enough meat on the bone. Straightforward, a page-turner, a Stephen King novel, compelling well written characters, but nothing to chew on or to get stuck in one's craw. Most shows people praise fall into this category actually.
Breaking Bad - Almost gets there, surpassed by BCS. It has its moments of art and pathos, but surfaces for air too frequently in its action scenes and 'badassery'.