I would second the recommendation for Houdini but I would also recommend the rerecording of it from 2005, A Live History of Gluttony and Lust. Some incredible sounds on that.
Bullhead would be my second recommendation, very sludgy and heavy. Possibly my favourite album after Lysol, which is an absolute monster but wouldn’t be a good entry point.
Gluey Porch Treatments and Ozma are well worth a listen too. Knottier and twistier than the later stuff but still great.