Once Moby 2 is enabled on your store, every legacy Agent lives under Settings → Moby Tools → Agents (Moby 1). That list is the complete inventory for migration.
If you're looking in the original Moby 1 interface (before enabling Moby 2), Agents live in two places: Moby → Agents (account-level) and inside each Core Workspace submenu (workspace-scoped). Checking both is important — workspace-scoped Agents are easy to miss.
Not every item in the Agents tab is a full Agent. Anything with a slash in the name (like /MER reporting) is a scheduled task — a simpler single-prompt job. See Scheduled tasks vs. Agents for the distinction.