I believe Revolver from the recent boxset with the new stereo remix, has an unaltered Mono Mix on one of the CD’s. The singles Paperback Writer and Rain are also featured in Mono.
Still wish there was a Bluray included with Hi-Res mixes though (though there are Hi-Res files digitally available including the Mono mix). I enjoyed the new stereo mix so having a lossless Atmos mix too would have been amazing!