Cisco Catalyst 3650 Series

This is an example of output from the show ip igmp snooping groups vlan vlan-id ip-address command.
It shows the entries for the group with the specified IP address:
Device# show ip igmp snooping groups vlan 104 224.1.4.2
Vlan Group Type Version Port List
-------------------------------------------------------------
104 224.1.4.2 igmp v2 Gi2/0/1, Gi1/0/15
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
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show ip igmp snooping groups