The Well-Known UIDs are Static Instance_UID mostly used in normalized operaions. The following is a list of all UIDs in DICOM

• Instance_StorageCommitmentPush 1.2.840.10008.1.20.1.1
• Instance_StorageCommitmentPull 1.2.840.10008.1.20.2.1
• Instance_Printer 1.2.840.10008.5.1.1.17
• Instance_PrinterConfigurationRetrieval 1.2.840.10008.5.1.1.17.376
• Instance_PrintQueue 1.2.840.10008.5.1.1.25

Actually only Instance_StorageCommitmentPush and Instance_Printer are commonly used.