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unabatedshagie - I would do this
Create a custom column built from other columns that gets value of 0 if {identifiers:select(goodreads)} is empty, otherwise it gets value 1. Then specify a column icon in Preferences->Look and Feel that shows a Goodreads icon if the the value of the custom column is 1.
I have a couple of similar ones, but not based on the identifiers column. Other responders may have different/better ideas.
There's some goodreads icons here ==>>
Goodreads icon
BR