I'm telling you guys - Rupert Murdoch.
Started small, sitting in Uruguay with his own little draft team. After seeing how easy this whole drafting business was for him, he decided to expand his influence. Soon, match discussions would only go in the direction of his choosing and he had complete control of the conversation. Having the Anto Seal of Approval™ was often the difference between winning and losing. Anyone not willing to play ball would have their team bombarded (sometimes in the draft thread itself) with walls of text, carefully constructed formation graphics and accusations of bellendery.
Having this sort of power and reach inevitably lead to further influence. We started seeing players like Montero, Marquez and Luis Enrique appear more often in drafts and managers started PMing him for advice; he was shaping policy! Eventually, the managers simply thought - "instead of trying to guess which players he likes, why not just let him pick them all for me?" The prospect of managing multiple teams was too tempting to turn down and the concept of shadow managing was born.
In order to avoid accusations of corruption, he'd mysteriously turn down offers to participate in drafts ("I'm too busy to take part", "my wife will kill me"), only to end up posting more than the actual managers themselves. Soon, the majority of draft teams were under his influence either directly or indirectly. I'm fairly certain we've seen draft games where, in actuality, it has just been Anto arguing with himself through proxy managers.
With the teams under his control, the final frontier was influencing the drafting process itself. Before you knew it, despite the OP clearly stating otherwise, he took over the sheep allotment process and the domination was complete.