Visionaries with lists of plans in mind (9)
I believe the answer is:
idealists
'visionaries' is the definition.
(I know this)
'lists of plans in mind' is the wordplay.
I cannot really understand how this works, but
'mind' could be 'idea' (synonyms) and 'idea' is present in the answer.
The remaining letters 'lists' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'with' is the link.
Can you help me to learn more?
(Another definition for idealists that I've seen is " visionaries".)