More alternative comedians ultimately follow the French (4)
I believe the answer is:
less
'more alternative' is the definition.
(I've seen this in another clue)
'comedians ultimately follow the french' is the wordplay.
'ultimately' suggests the final letters.
'follow' means one lot of letters go next to another.
'the french' becomes 'les' (plural form of 'the' in French).
The final letter of 'comedians' is 's'.
's' after 'les' is 'LESS'.
(Other definitions for less that I've seen before include "Smaller in amout or degree" , "A smaller amount" , "So-called St James" , "Comparative of 'a little'" , "Minus; not so much" .)