PHCollectionListMBS.TypeFolder = 2

Type	Topic	Plugin	Version
const	Photos	MBS Mac64bit Plugin	20.2

One of the constants for major distinctions between kinds of collection list,

A folder containing asset collections of type PHAssetCollectionTypeAlbum or PHAssetCollectionTypeSmartAlbum.

PHCollectionListMBS.TypeMomentList = 1

Type	Topic	Plugin	Version
const	Photos	MBS Mac64bit Plugin	20.2

One of the constants for major distinctions between kinds of collection list,

A group of asset collections of type PHAssetCollectionTypeMoment.
Moment lists include both moment clusters and moment years. Moment clusters appear as “Collections” in the Photos app, grouping individual moments. Years group all moments containing assets created in the same calendar year.

PHCollectionListMBS.TypeSmartFolder = 3

Type	Topic	Plugin	Version
const	Photos	MBS Mac64bit Plugin	20.2

One of the constants for major distinctions between kinds of collection list,

A smart folder synced to the device.