Which three harmonization methods will achieve the desired outcome?

An implementation engineer is requested to extract the second position of the Campaign Name values.

The Campaign values consist of multiple delimiter types, as can be seen in the following example:

Campaign Name: Ad15X2w&Delux_wal90

Desired value: Delux

Which three harmonization methods will achieve the desired outcome?
A . Calculated Dimensions
B . Patterns
C . Vlookup 0
D . Data Fusion
E . Mapping formula