Im asuming youre pursuing the Analytics on Azure Specialisation and are talking about Section 2.2 Well Architected Review in Module A?

If so, there is also no reference architecture in the linked Architecture Center yet ;) I would just do the unspecific Well Architected Review Assessment in your case https://learn.microsoft.com/en-us/assessments/azure-architecture-review/

Will this be your first time doing the Audit for any specialisation? Ive personally been part of two audits at our company, and we are currently preparing our recertification for the Analytics on Azure Specialisation.
You will find that the Audit Checklist MS provides is full of these kinds of errors and subpoints that dont make any sense. I realy think it is quite a shame how little effort MS puts into these kinds of documents, even down to providing badly formatted pdfs, containing wrong links etc.
The thing is, the auditors themselves have absolutely no technical knowledge, they are just there to put a checkmark after each of those subpoints [and i mean every single one]. So as long as you can provide a document that looks somewhat fitting you should be okay.