Snapshots come in two flavors, Full and Incremental. The IncrementalSnapshot has a Slot field, which is the incremental snapshot base slot.

Type Definitions

The PendingAccountsPackage passes an AccountsPackage from AccountsBackgroundService to AccountsHashVerifier for hashing

The PendingSnapshotPackage passes a SnapshotPackage from AccountsHashVerifier to SnapshotPackagerService for archiving

Module solana_runtime::snapshot_package