the Repeat Data is fine as long as you need to manipulate that data further, otherwise (if for instance you need it just to tell GH on which Layer to bake stuff) it’s superfluous, because GH works on the principle of Longest List, so this is enough:
if you want the data tree structures to match (so also number of Items per branch) you can do this, as suggested earlier:
do not be bothered by the different path addresses the Layer structure has: those numbers are for us humans 
GH plainly ignores them and just matches branches 1:1 [but if you are really bothered, you can apply Principal like here]
if you want to apply a visual check by color, you can just do something like this:
unnamed_Re.gh (18.5 KB)