How to skip a string in an array

I’ve looked in a path, got all specific assets (in this case level sequences) and put that into a variable. Now, I want to say “If this name exists, don’t try to create a level sequence with that name, if it doesn’t, create a level sequence”. Any ideas the best way to do this?

How to skip a string in an array

Or am I missing something?

The above would skip what’s in the equal node.