The difficulty of finding a complete Fisher disposal list

Is there a good official list of the ship classes Fisher got rid of?

Not really. The evidence is scattered and has to be assembled from the historical literature.

There is no easy single source listing every class Fisher disposed of. The evidence has to be assembled from books and other historical records instead of a ready-made official catalogue. That scattered research trail also exposes an interpretive problem: many accounts call ships old even when they were scrapped less than twenty years after construction began. The Orlando class is one such case.