There are many bloggers and people with axes to grind including conspiracy theorists. I think it is beneficial to peruse the various ideas because among the free thinking are possibilities that become more plausible with more evidence.
A reader asked today about the possibility of VP Mike Pence being a leaker. His alleged motivation is to take down Trump to fill his shoes as Pence is in the Constitutional protocol.
There is a problem with that because if Trump is found to be illegitimate, then so too is Mike Pence. Since Mike Pence has done more than just standing by his man, his being a member of the campaign team probably tarnishes him irreparably.
A report from Bill Palmer says this.
"White House leak: Reince Priebus and Mike Pence suspect Putin is blackmailing Donald Trump
By Bill Palmer
Updated: 12:32 pm EDT Sun Jan 29, 2017 | 0
If Donald Trump’s deferential attitude toward Vladimir Putin and the intel reports of Russia holding blackmail tapes on him are enough to convince you that Trump truly is Putin’s puppet, it turns out you’re not alone. Disgruntled staffers within the White House, who have begun leaking one inside detail after another, have now shared this revelation: based on the way Trump acted during his recent phone call with Putin, even Reince Priebus and Mike Pence now suspect Putin may indeed be blackmailing Trump."
My guess is that anyone whose last name is not Trump or his son-in-law, are candidates for leaking.