I don’t know of any node that compares an arbitrary amount of integers to some other value. You could create an array out of your integers, and then use the Compare Ints function:
If you create a Macro instead of a function, you can include the branch into that as well using exec outputs.
The only other option I see is to create a function that compares its input against whatever value, and plug every integer into one of those. If the other value is a constant, that will save you some space in your blueprint, but it won’t offer any other advantages imo.