Mediumship – The ability to summon spirits from the other side. The ability to only see the recently deceased that have not crossed over is vision (ghosts).
Brother Voodoo (Marvel) has this power (Strange Tales V1 #170).
Doctor Mirage – Valiant Universe Handbook 2016 Edition #1 (2016)
Fighting Yank – Official Golden-Age Hero and Heroine Directory #1
Marta Dobrescu is a medium and a lawyer in Astro City #39 (Vertigo).
Nightwolf – Mortal Kombat 9 (2011) Prima Guide