Crossword Genius

Unusual items, no good in different categories (9)

Ross

I believe the answer is:

esoterica

'unusual items' is the definition.
(esoterica means unusual or curious items)

I don't understand the rest of the clue.

(Other definitions for esoterica that I've seen before include "Secret subjects" , "obscure knowledge" , "Coarse tie? (anag)" , "Mystic objects" , "Obscure things" .)

I've seen this clue in The Guardian.
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