By request from Krypt, below are lists tracking which bosses explode on death, and which do not, so that players may know when to use Autoloot, and when to turn it off. This list is still in progress as I do more runs, and add more mobs.

Does Explode:

Demonis
Destroyer
the mechagoblin
hideous screaming skull of regret (ports, does not explode)
the demon lord of Cruelty

Does NOT Explode:

Alpheus Winterborn
an ettin cannibal
Baron Simon Bloodbane
Beyonder, guardian of the source
Focault
Heptheran the Demonic
Lady Bane
Mass of Souls
Novrar the necromantic beast master
Sargrag the Sinner
The Ash Dragon
the brutal
The great shadow wyrm Draask
the teary-eyed, bedraggled bride
Vextrinas