easiest way is to rename your wrappers, so they have a unique name.

then, you can safely delete the wrappers that are not used.

then you can debug the in use wrapper(s)

2c

i don't know how many times i've seen sites with 10 or more 'default' wrappers, when only 1 is being used.

good practice is to name all your wrappers the same as your theme name and not share them. then wrappers have a 1 to 1 relationship with their theme.