Hello
It is possible to create a dynamic string list in BP which in the properties can be selected as a list or as the enum variable type.
An Array of Strings is basically a List of Strings.
You can append and remove Items from the Array.
You also have the possibility to use “Switch over String”.
Keep in mind that “Switch over String” works with predefined Strings for the outputs.
An Enumeration is just a number, unlike Strings.
Edit:
Just re-read your question:
No, you can’t have a List of Strings as an Type itself.
You need to use an ENUM for this.