Yep, they will be all removed from play.
Apart if the card doesen't summon all them in the same time.
Example:
Cards like Crystal Abundance will summon the Crystal Beasts from grave at the same time.
Cards like Wulf,when are sent to the graveyard,Are NOT Summoned at the same time by a lightsworn monster. If you sent 3 Wulf from top of deck to grave,Only 1 Wulf will be summoned at time.
Hope i helped.
Please reply here if your question has been answered,and i'll close this.