It looks like those are shared parameters. Unfortunately, we can only ensure they are unique by using their internal Revit definition, which is that incomprehensible text (called guid).
If PowerBI doesn’t require column names to be unique, we could maybe do the same simplification that the viewer does. @AlanRynne, what do you think?
I usually add a step in the Powerquery to automagically rename those GUIDs to their human-readable names before passing them to the dashboard.
Expanding the data.parameters.00000000-0000-0000-0000-0000000000 and selecting both name and value, you should then be able in your query to rename the value column to the first non-null value of the name column.