Every contract Ghostdex calls. None of them was deployed by Ghostdex; each one belongs to the venue named next to it. Ghostdex has no contract of its own, and ghosts are ordinary addresses, not contracts.
Each address can be opened on the chain's explorer. Before signing, your wallet or the ghost's confirmation sheet shows the contract a transaction calls. It should match one of the addresses above, or the address of a vault, a stock or a launched token you chose.