For the purposes pf AML you cant just say "this is the person" without showing their documents to prove it. Theymos is known doesnt mean he has ever sent Nefario his DL or electric bill. For all intents and purposes the other "shareholders" are invisible.
Regardless of whether identity information is required to formally create a business entity - and, for the most part, it is these days for office-bearers and significant shareholders alike - there's no way I'd even consider entering a business partnership with someone without proof of their real world identity.