<PackageReference Include="Microsoft.Identity.Client" Version="4.82.1" />

Microsoft.Identity.Client.Cache.CacheLevel

public enum CacheLevel
Identifies the type of cache that the token was read from.
L1Cache = 2

Indicates that the token was read from the L1 cache.

L2Cache = 3

Indicates that the token was read from the L2 cache.

None = 0

Indicates that the token was retrieved from the identity provider.

Unknown = 1

Indicates that the cache level used is unknown. Token was retrieved from cache but the token cache implementation didn't specify which cache level was used.