Someone recently asked in Rocket.Chat about having a mobile friendly version of the grid on the group finder page. When we did our website the great people over at KFS created a theme for us and did a custom layout for the group finder. Here is the lava for that if you want to take it and use it for your church. Please note we added group type attributes to the group type of small groups for picture so each group can upload their own group photo and we set a default photo for those that didn't upload a photo.
That full lava document can be found here: https://codeshare.io/5OXrjv
Here's a gif of the layout on our website.