All is obviously working fine for me, running Keyboard Maestro 9.0.4 on macOS 10.14.6 (Mojave).
If you can provide exact details about what is not working, and the versions of KM and macOS you are running, I'll try to help you debug.
Can you be specific?
I am not using any other Macros for Option 2. Prompt With List.
It is a straight forward use the the KM Prompt With List action:
As stated in the Macro itself, Option 4. Spotlight-like Prompt by @DanThomas , requires download and installation of the macro by Dan:
Great! I hope you find it helpful.
If you have any further questions, feel free to ask.