Based on the links in the articles, it's personal photographs and a resume from an old Gmail account. The resume dates from 2017.

If they got into the account they got everything. The publicly released pictures are more of a taunt meant to publicly signal that he’s fucked. I would bet (figuratively) that anyrhing of actual value is either being sold or leveraged. After all this is a man that has shown an almost infinite capacity for humiliation.