Google Analytics Expert Needed for Custom Report

Hello, My Google Analytics needs are bit different. We build and manage several OTT streaming television channels both in house and for clients. Right now our channels are on the ROKU platform with Google Analytics plugged into them for tracking. Currently each client has their own channel with their own content on them. I need to build channels that can mix the content providers films in the same channels, but be able to run events reports based on individual publishers content stats. GA is not my strong suit, so hoping you can help. Thank you very much, looking forward to communicating.