* Invent more sorts of it (10)

'invent' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'more sorts of it' is the wordplay.
I cannot quite see how this works, but
'more' could be 'm' and 'm' is present in the answer.
'of' could be 'o' and 'o' is located in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is present in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?