The bulk of the Dossier was   5ea  written in 2007 by Glenn Simpson, founder of Fusion GPS.  John McCain was the target, but Bush wouldn't approve letting his DOJ act on it.  Steele was just used for credibility (meaning the FBI would claim that he was a "trusted source" because they had used him before with good results.  This gave them more credibility for the FISA application). There's a 2007 WSJ article that spelled out the whole Russia Collusion plot, complete with the same Russian players like Oleg Desispraka and others.  I think the pee part was in it too.