Retrieving financial entities using iMIS REST API

How do we get all the financial entities from iMIS using its REST API? For example:

The current endpoints Item or ItemSummary appear to be returning "Fund" only type of entities. For instance: the (demo) entity code GSTIN is not a "fund" and those endpoints do not work (returning not found) in that case.

There is a business object: CsOrg_Control (that returns too much data such as a logo image). Is there an IQA using that business object? Are there other business object(s) or IQA(s) that would assist us in retrieving all financial entities from iMIS?

Please help. Thank you.