A Global List is an account wide list that can be used on any form. A Global List is a legacy feature and is the predecessor to the Lookup List. Global Lists are predefined into four columns: Name, Value, FilterKey, Score.
Assigned unique text, will display for user in App
Value when shown in reporting
Custom text for internal index
Unique numerical assignment commonly used to carry out calculations
Note that your created list can only be in .csv or .xlsx formats