ArcGIS Pro 2.9.12; File Geodatabase (and Oracle 18c 10.7.1 EGDB):
I've created an annotation FC using the Create Feature Class wizard in Catalog:

The annotation FC is shown as SHAPE = Polygon in the attribute table.

Idea: Show the SHAPE as Annotation, not Polygon. I think that would be more intuitive.
Related: Annotation shown as SHAPE=Polygon in attribute table