I want to know if there is a quick way or a command that can list the locations where a particular "junk" text style or block is being used to be able to go to it/zoom to it and edit it or remove it.

Fonts are the main issue, but so are junk blocks hidden in blocks. Such as ones hidden within blocks, so that I can convert them to a standard font or get rid of the style definition. Problem is bizarre non-standard styles or styles with unrecognizable names that have "contaminated" some drawing files from things like other drawing block inserts.

The Purge command cannot purge them out because they are apparently in use somewhere, presumable hiding in one of the many block definitions.
Quick Select button/command cannot select items that are nested within other items.