Storytellers of course rant wildly (10)

I believe the answer is:

raconteurs

'storytellers' is the definition.
(raconteur is a kind of storyteller)

'course rant wildly' is the wordplay.
'wildly' is an anagram indicator.
'course'+'rant'='courserant'
'courserant' with letters rearranged gives 'RACONTEURS'.

'of' acts as a link.

I've seen this clue in The Independent.

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