A previous employer hit the problem where there were a ton of legacy features that didn't have clear owners and so it wasn't clear where to route bug reports.
Their solution was to build a catalog of every feature and then assign EVERY one of them to an existing team.
Teams might end up responsible for features that they had never seen before and had no knowledge of... but that was fine, because every other team was in the same situation.
It worked great. Bugs got fixed. Teams figured it out.
A previous employer hit the problem where there were a ton of legacy features that didn't have clear owners and so it wasn't clear where to route bug reports.
Their solution was to build a catalog of every feature and then assign EVERY one of them to an existing team.
Teams might end up responsible for features that they had never seen before and had no knowledge of... but that was fine, because every other team was in the same situation.
It worked great. Bugs got fixed. Teams figured it out.