Most users don't use any cryptocurrency, they're just ordinary individuals most of the time. We have quite a broad range. Outside of BTC or XMR the most significant after those two is probably ETH, Vitalik Buterin himself uses GrapheneOS. To my knowledge he's one of our largest donors too but not entirely sure on the numbers? 

 Worth noting it's same with the team. Some have technical knowledge but some don't use them because they have different backgrounds. Some full-time devs are paid with BTC and Monero but not all.