I think that he's the most respected luchador, much like El Santo.
However... I don't think that he's the leader. It'll make sense if the leader is the promoter of whatever name the Huracan's wrestling federation is. Senor Vicente de Mahon, perhaps?
El divino is the leader,it's certainly hinted at in a few of the character bios,and leaders usually do recruit most of the members to clans anyway.
What i do believe though,is that he's not the original el divino,as it mentions that it's passed down from one person to the next,and if it's even slightly implied,that event must have happened at least once in the clan's history,whether they were the huracan,or were a smaller group,at that certain point.
And i think los santos is the name of a place,not a wrestler/clan member.
Obvious reference. But it's a place in UR now and you just gotta learn to deal with it
Los Santos means The Saints. In the context of GTA, it's a parody of Los Angeles (The Angels). In the context of UR, it's heavily implied to be a Central or South American country. Different place, same name, like how there's a character called Pyro in both UR and TF2.