looking around.
I found other three minor issues. attached.
I am not sure the pg_class "relam" description part is correct. since
partitioned indexes (relkind "I") also have the access method, but no
storage.
"
If this is a table or an index, the access method used (heap, B-tree,
hash, etc.); otherwise zero (zero occurs for sequences, as well as
relations without storage, such as views)
"