How do I find a _ in a array?

My problem is: I need to find ONLY strings that contain _ in an array and show only those strings.

To put it another way: I have an array with several room names. The public ones have ! at the end of their name, the private ones have _.

I'm having trouble filtering in a for each to find only the ones with _ and display them on the screen.

I tried find, but it doesn't work with tokenat.

The issue with tokenat is that you don't know how long the room name is. You can use the "right" expression to get the last character of any string.

Use Tokencount along with Left: drive.google.com/file/d/1odgshbptTLYFKso5vKeqXPA9zGRjEb_M/view