I have 7500 Groups and need to report who are all the Owners, not in relation to Groups. The Owners names are currently separated by a comma, as well as their user First and Last names. If separated with something other than a comma, I could use Excel to separate all the names to determine duplicates and get the list I need.

Here's how the O365 Owners report currently looks like:
Group1: Joe, Schmo1, Joe, Schmo2, Joe, Schmo3, ServiceAccount1, Joe, Schmo4, ServiceAccount2, etc...

Can you please update the reporting to separate these accounts with a semicolon like this?
Group1: Joe, Schmo1; Joe, Schmo2; Joe, Schmo3; ServiceAccount1; Joe, Schmo4; ServiceAccount2; etc;