Can I change the array index name?

[MickeySuperS (Mickey)]

As mentioned here
Custom array item name in editor - Development / Programming & Scripting - Epic Developer Community Forums (unrealengine.com)

This could be achieved by the “TitleProperty” meta attribute

UPROPERTY(meta = (TitleProperty = "NameOfSomeMemberPropertyInFMyThing"))
TArray<FMyThing> MyArray;