On the instance lists of the VRChat Android application, it is not possible to see which group is the owner of each instance.
Same issue can be seen with private (Friends and Friends+) instances, but this is usually not as big an issue.
This issue also exists on the VRChat website, see: website-cant-see-owner-of-group-instances
Version 2024.1.2p1-1436-3a2cdd3839-Release