saying 35% was instamined is inaccurate because you are talking about the "current coin supply" and not the "total coin supply".
I don't know what method coinmarketcap uses when they decide what is "signficantly" but either way it seems significant to me, and it seemed significant to Evan when he talked about the enormous amount of mining in the first 24 hours causing "problems" and it also seemed signifiant to the darkcoin FAQ and origin of dash posts on the dash site.
These are primary, and credible sources.
you are using a moving target as your metric which is not very smart and quite deceptive. in that case monero has a 15-20% instamine.
Monero has 0% instamine
There are no instantmines or premines in Monero.