1) The first concept list is the non IC HQ list. You run both Sanguinor & Mephiston.
2) The second concept list is as follows:
2x asault terminator squad/4x paired lightning claws & thunder hammer-stormshield
Attach a sanguinary priest in terminator armor & a stormshield to each squad (Feel No Pain & Furious Charge bonuses). Next attach a Librarian in terminator armor & a stormshield to each squad (Preferred Enemy psychic power).
Put each combined squad in a landraider Crusader. This is one army where deepstriking the two landraiders could be viable.