Aid to follow extremely cultural, discriminating type (8)

I believe the answer is:

classist

'discriminating type' is the definition.
(someone who discriminates based on social class)

'aid to follow extremely cultural' is the wordplay.
'aid' becomes 'assist' (synonyms).
'to follow' says to put letters next to each other.
'extremely' means to remove the middle letters (only the extremes of the word are used).
'cultural' with its centre removed is 'cl'.
'assist' put after 'cl' is 'CLASSIST'.

I've seen this clue in The Telegraph.

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