The Season 4 cutoffs corresponding to the Top 0.1% are currently close to 3,000 Mythic+ Rating in the US region. it’s worth noting factions are no longer relevant for the title.
Breakdown of Spec Popularity in the Top 0.1% of Mythic+ Rating (Shadowlands Season 4)
Thanks to Reddit user Stozzer for the graph.
The graph is somewhat difficult to decypher without zooming in, so I’ve included the spec order in text format:
Blood Death Knight
Vengeance Demon Hunter
Havoc Demon Hunter
Frost Death Knight
The remaining missing specs do not have any data tied to them on the graph.