Is it possible to change Values into Categories when creating cards?

Referring to data types, categories are text or date fields and values are numbers.  You can turn a number into text by using a CONCAT() function in a Beast Mode.  Something along these lines:

CONCAT(`Organization_ID`,'')

Add blank text to the end of a number and the output will be that number as a string of text instead of a numeric value.  Good for situations where you have customer IDs or employee IDs that you want to use in a filter (by checking specific IDs), but you can't because a number type won't let you pick multiple numbers.  That's where I've seen this tactic used.