Drops also include all vanilla drops of each respective mobs.

Evolved Creepers:

-Sand
-Medium Oxygen Tank half empty or less
-Oxygen Gear
-Ice

If Asteroids Challange mode mob drops and spawning is enabled:

-Sugar Cane

Evolved Enderman:

-Nothing
-Ender Pearl
-Medium Oxygen Tank half empty or less
-Eye of Ender
-Oxygen Concentrator
-Oxygen Mask

Evolved Skeleton:

-Nothing
-Oxygen Pipe
-Medium Oxygen Tank half empty or less
-Tin Canister

If Asteroids Challange mode mob drops and spawning is enabled:

-Pumpkin Seeds

Evolved Spider:

-Nothing
-Cheese Curd
-Fermented Spider Eye
-Medium Oxygen Tank half empty or less
-Oxygen Gear
-Oxygen Concentrator

If Asteroids Challange mode mob drops and spawning is enabled:

-Nether Wart

Evolved Witch:

-Nothing
-Can of Dehydrated Carrots
-Glowstone Block
-Ambient Thermal Controller
-Heavy Oxygen Tank half empty or less
-Oxygen Mask
-Oxygen Vent

Evolved Zombie:

-Nothing
-Can of Dehydrated Carrots
-Raw Meteoric Iron
-Can of Dehydrated Potatos
-Medium Oxygen Tank half empty or less
-Oxygen Mask
-Oxygen Vent
-Carrot

If Asteroids Challange mode mob drops and spawning is enabled:

-Melon Seeds