Collect images for all services for all sites and put them in a folder structure below in google docs. Each service pages has the same images for all sites.
E.G.
cms.geek-computer.com/service/email-migration
cms.geek-computer.com/service/android-repair
GoogleDriveBrandId/ServiceName
GS
GC
TSM
TC
MCG
MW
OSO
(Paid)
(Paid)
(Paid)
(Paid)