Hysteria is still one of my all-time fave albums. The original, not the dad-rock cover version they recorded for the streaming sites (although I appreciate why they did that!)
There’s a great program in the (I think) Classic Albums series on one of the Sky channels (Arts?) about the recording of it. They play about with the masters in the studio and you can really hear how great the harmonies, etc are in isolation. All the guys were great singers which is somewhat unusual for a rock band, plus great musicians to boot IMO.
Most of the glory surely should be with Mutt
He certainly was responsible for the overall sound and made the album what it was, it wouldn’t have been the same with another band doing it though