Is there a way to create requisition auto-approval rule based on supplier type?

Summary:

We have a requirement to get the intercompany requisitions/PO's auto-approved. We took care of PO auto approval with BPA, approval rules. Requisition approval rules do not have an option to select the supplier type in conditions like PO rules do. I would like to see if there a way to achieve this before submitting an idea.

Content (required):

We covered all scenarios, externally managed requisitions, PO's with no backing requisitions etc., except for manually created intercompany requisitions. Supplier is optional for requisition, but ability to choose supplier type in condition for requisition approvals would help. P.S: We are switching to Transfer Order process to handle internal transfers. This is interim requirement.