He's probably made about $600K total from his Youtube channel. He didn't start streaming on Twitch again until 2017, and I think he's made a ballpark of between $250K and $300K from Twitch cheerssubsandtips to date. That puts your guestimated total around $300K to $350K too high.
Phil has been self-employed this whole time which puts his averaged tax rate + FICA at around 30%, so there goes $270K to Uncle Sam. I think his CT Condo monthly mortgage is around $1,200, so 8 years of payments on that is $115K. Phil was leasing a BMW for like 5 years, if we say that's $500/month that's $30K. Phil's CT income tax bracket from 2011 to 2014 was 6%, he was making quite a bit of Youtube buck during this time period so that alone could be $16K to $25K. In 2014 Phil took out a loan for the Wakando that he put 5% down on, call that $11K, and has 6 years of $1,800 monthly payments on it totalling $130K. In 2017 Phil bought a new car that he's paying $380 per month for so the monthly payments have been like $14K.
That puts us at ($270K+$115K+$30K+$16K+$11K+$130K+$14K) $586K and we haven't even considered health insurance for 9 years, multiple vacations, the egregious amounts of shit he bought, $7K to haul said shit across the entire continent, 9 years of piggys liquor and food bills, 3 round trip tickets from Michigan for the "Weekend Girlfriend Experience" with Kathy, 500+ new blu-rays, $400 titty paintings, like 3 $1,000 gamer quilts, etc, etc, etc.
Phil also had a lot of credit card debt from before 2011 that he had just finished paying off right before he bought a 2nd condo and moved, so consider mid-2014 Phil as being at $0 and then he sank tens of thousands into the move and subsequent 'fill up my serious adult house' months long shopping spree all on credit that he hasn't paid off since. I don't believe Phil has any secret savings. Oh yeah, let's not forget $40K+ on WWE Champions