Are Creator Thumbprints part of a Signature Style?

(I have tried writing this twice now; each time, it came out as a rambling essay. Maybe that's my signature style.)

Having read through the Signature Style example list and subpages, I've noticed that Creator Thumbprints and members of the Production Posse tend to be listed alongside other, more stylistic, things, such as camerawork and narration quirks. Do these things count towards the style, or are the better off left out of the examples?

Leave them off.

Signature Style is about an overall style or structure shared my multiple works by a single creator or group.

Creator Thumbprint is a specific thing that a creator includes in all their works, such as John Landis' movies all having someone say "See you next Wednesday."