In connection with the historical development of the classification of finite simple groups, I am interested in a particular aspect that seems to be less well-documented than the main narrative of discovery and confirmation. Specifically, I am referring to the question (posted 11 years ago) Groups that do not exist, which asked whether there were finite simple groups conjectured at some point that turned out not to exist.

To build upon that discussion, I am looking for a very specific kind of artifact from the history of group theory: explicit character tables for such conjectured but non-existent finite simple groups, if they ever were constructed. My understanding is that character tables were computed for many groups as part of the classification effort.

Question: Could anyone provide references to or copies of explicit (complete) character tables developed for finite simple groups that were later shown not to exist?

If possible, please elucidate the reasoning behind the exclusion.