Terapagos Tera Ghost Starstorm seems to correctly indicate Type effectiveness during move select
Done both to contribute to the battle mechanics research effort at Smogon and for my own personal curiosity. These videos are made public since Indigo Disk in case anyone stumbles into them and finds them helpful or informative. All the videos can be found in the playlist below, including ones not visible directly on the channel.
https://www.smogon.com/forums/threads...
• Pokemon SV Mechanics Testing and Research