I define the 'nutritional value' of a Pikmin creature as its 'calories' (Pikmin produced) divided by its 'weight' (Pikmin required to carry it). There is a huge range.
Monsters, sorted by nutritional value
Creature Weight Value Nutrition
Smoky Progg 3 100 33.33
Pearly Clamclamp 3 50 16.67
Shearwig 1 4 4.00
Puffstool 10 30 3.00
Sheargrub Male 1 3 3.00
Sheargrub Female 1 2 2.00
1 Pellet 1 2 2.00
Mamuta 8 15 1.88
Armored Cannon Beetle 30 50 1.67
Dwarf Bulbear 3 5 1.67
Spotty Bulbear 10 15 1.50
Dwarf Bulborb 3 4 1.33
Swooping Snitchbug 3 4 1.33
Spotty Bulborb 10 12 1.20
Fiery Blowhog 7 8 1.14
Wollywog 7 8 1.14
Yellow Wollywoog 7 8 1.14
Breadbug 3 3 1.00
Water Dumple 5 5 1.00
Wogpole 1 1 1.00
1 Pellet, wrong Onion 1 1 1.00
5 Pellet 5 5 1.00
10 Pellet 10 10 1.00
20 Pellet 20 20 1.00
5 Pellet, wrong Onion 5 3 0.60
10 Pellet, wrong Onion 10 6 0.60
20 Pellet, wrong Onion 20 10 0.50
It's also interesting to sort them by total seeds produced.
Monsters, sorted by seeds produced
Creature Weight Value Nutrition
Smoky Progg 3 100 33.33
Pearly Clamclamp 3 50 16.67
Armored Cannon Beetle 30 50 1.67
Puffstool 10 30 3.00
20 Pellet 20 20 1.00
Mamuta 8 15 1.88
Spotty Bulbear 10 15 1.50
Spotty Bulborb 10 12 1.20
10 Pellet 10 10 1.00
20 Pellet, wrong Onion 20 10 0.50
Fiery Blowhog 7 8 1.14
Wollywog 7 8 1.14
Yellow Wollywoog 7 8 1.14
10 Pellet, wrong Onion 10 6 0.60
Dwarf Bulbear 3 5 1.67
Water Dumple 5 5 1.00
5 Pellet 5 5 1.00
Shearwig 1 4 4.00
Dwarf Bulborb 3 4 1.33
Swooping Snitchbug 3 4 1.33
Sheargrub Male 1 3 3.00
Breadbug 3 3 1.00
5 Pellet, wrong Onion 5 3 0.60
Sheargrub Female 1 2 2.00
1 Pellet 1 2 2.00
Wogpole 1 1 1.00
1 Pellet, wrong Onion 1 1 1.00