Autographs of most of The Omen characters (10)

I believe the answer is:

signatures

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'autographs' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Maybe you can see a link between them that I can't see?

'most of the omen characters' is the wordplay.
'most of' means to remove the last letter.
'the omen' becomes 'sign' (I've seen this before).
'characters' becomes 'natures' (I've seen this before**).
'sign' with its final letter removed is 'sig'.
'sig'+'natures'='SIGNATURES'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for signatures that I've seen before include "Written names (for identification)" , "distinctive marks" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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