@chrischambersau Thanks for pointing out that page. It needs an update!
We don't normally change service plan ID's. You should see both AAD_SMB and AAD_PREMIUM. Here are the service plans for an M365 Business Premium tenant:
ServicePlanId TargetClass ServiceType ServicePlan
------------- ----------- ----------- -----------
41781fb2-bc02-4b7c-bd55-b576c07bb09d User AADPremiumService AAD_PREMIUM
de377cbc-0019-4ec2-b77c-3f223947e102 User AADPremiumService AAD_SMB
932ad362-64a8-4783-9106-97849a1a30b9 User Adallom ADALLOM_S_DISCOVERY
28b0fa46-c39a-4188-89e2-58e979a6b014 User CRM DYN365_CDS_O365_P3
8c7d2df8-86f0-4902-b2ed-a0458298f3b3 User Deskless Deskless
39b5c996-467e-4e60-bd62-46066f572726 User DynamicsNAV DYN365BC_MS_INVOICING
9bec7e34-c9fa-40b7-a9d1-bd6d1165c7ed User Exchange BPOS_S_DlpAddOn
176a09a6-7ec5-4039-ac02-b2791c6ba793 User Exchange EXCHANGE_S_ARCHIVE_ADDON
9aaf7827-d63c-4b61-89c3-182f06f82e5c User Exchange EXCHANGE_S_STANDARD
199a5c09-e0ca-4e37-8f7c-b05d533e1ea2 User Exchange MICROSOFTBOOKINGS
33c4f319-9bdd-48d6-9c4d-410b750a4a5a User Exchange MYANALYTICS_P2
5bfe124c-bbdc-4494-8835-f1297d457d79 User Exchange O365_SB_Relationship_Management
4828c8ec-dc2e-4779-b502-87ac9ce28ab7 User MicrosoftCommunicationsOnline MCOEV
f47330e9-c134-43b3-9993-e7f004506889 User MicrosoftCommunicationsOnline MCOEV_VIRTUALUSER
3e26ee1f-8a5f-4d52-aee2-b81ce45c8f40 User MicrosoftCommunicationsOnline MCOMEETADV
4ed3ff63-69d7-4fb7-b984-5aec7f605ca8 User MicrosoftCommunicationsOnline MCOPSTN1
0feaeb32-d00e-4d66-bd5a-43b5b83db82c User MicrosoftCommunicationsOnline MCOSTANDARD
54fc630f-5a40-48ee-8965-af0503c1386e User MicrosoftKaizala KAIZALA_O365_P2
094e7854-93fc-4d55-b2c0-3ab5369ebdc1 User MicrosoftOffice OFFICE_BUSINESS
276d6e8a-f056-4f70-b7e8-4fc27f79f809 User MicrosoftOffice OFFICE_SHARED_COMPUTER_ACTIVATION
743dd19e-1ce3-4c62-a3ad-49ba8f63a2f6 User Microsoftstream STREAM_O365_E1
8a256a2b-b617-496d-b51b-e76466e88db0 User MultiFactorService MFA_PREMIUM
159f4cd6-e380-449f-a816-af1a9ef76344 User OfficeForms FORMS_PLAN_E1
92f7a6f3-b89b-4bbd-8c30-809e6da5ad1c User PowerAppsService POWERAPPS_O365_P1
0f9b09cb-62d1-4ff4-9129-43f4996f83f4 User ProcessSimple FLOW_O365_P1
b737dad2-2f6c-4c65-90e3-ca563267e8b9 User ProjectWorkManagement PROJECTWORKMANAGEMENT
bea4c11e-220a-4e6d-8eb8-8ea15d019f90 User RMSOnline RMS_S_ENTERPRISE
6c57d4b6-3b23-47a5-9bc9-69f17b4947b3 User RMSOnline RMS_S_PREMIUM
c1ec4a95-1f05-45b3-a911-aa3fa01094f5 User SCO INTUNE_A
8e9ff0ff-aa7a-4b20-83c1-2f636b600ac2 User SCO INTUNE_SMBIZ
c7699d2e-19aa-44de-8edf-1736da088ca1 User SharePoint SHAREPOINTSTANDARD
e95bec33-7c88-4a70-8e19-b10bd9d0c014 User SharePoint SHAREPOINTWAC
a23b959c-7ce8-4e57-9140-b90eb88a9e97 User Sway SWAY
57ff2da0-773e-42df-b2af-ffb7a2317929 User TeamspaceAPI TEAMS1
5e62787c-c316-451f-b873-1d05acd4d12c User To-Do BPOS_S_TODO_1
b8afc642-032e-4de5-8c0a-507a7bba7e5d User WhiteboardServices WHITEBOARD_PLAN1
8e229017-d77b-43d5-9305-903395523b99 User Windows WINBIZ
7547a3fe-08ee-4ccb-b430-5077c5041653 User YammerEnterprise YAMMER_ENTERPRISE
94065c59-bc8e-4e8b-89e5-5138d471eaff Tenant Bing MICROSOFT_SEARCH
f20fedf3-f3c3-43c3-8267-2bfdd51c0939 Tenant Exchange ATP_ENTERPRISE
113feb6c-3fe4-4440-bddc-54d774bf0318 Tenant Exchange EXCHANGE_S_FOUNDATION
882e1d05-acd1-4ccb-8708-6ee03664b117 Tenant SCO INTUNE_O365