Bisq, Haveno, BasicSwapDEX, UnstoppableSwap (all used or can be used through tor)

LocalMonero/AgoraDesk (really popular p2p exchange that had a tor site and recently closed down presumably because the uncertain legal climate around Samourai crackdown)

Monero is delisted from almost every major centralized exchange. The most recent one was Binance earlier this year (largest exchange on the planet by far). Theres only a handful left like Kraken and only in the USA if i remember right.

No I'm sure it's not all p2p, but willing to bet it's disproportionately p2p vs Bitcoin and other crypto because of the above