Yes, Yes he is....at least in the modern era
He copied the 4 horsemen trope so well that most other one's ive seen were doing an impression of evolution doing an impression of the 4 horsemen
He did take DX from a vehicle to keep the belt on HBk to being a group solely to protect him, great leadership right there
Now the knock is...its Triple H...its not like he wasnt in a favorable position to have his faction booked strong lol
But The All time Faction Leader, is his Evolution Teammate Ric Flair
NWO? Hoegan was a terrible Leader as was Nash
DX?HBK never actually seemed like the "Leader" more like a partner
Bullet Clubs Whole shtick was X joins Bullet club as the new Leader
Nation of Domination? ended too quick and Rocky Never Looked Back
The Shield? Like HBK era DX just seemed like partners on different levels on the card
Hart Foundation? didnt Produce the Massive Stars Randy Orton and Batista are
Only asterisk on Hunters name is the fact that....well his name is his name
and he's always had booking on his side