Poggle "The Lesser" is a title showing humility at the very least. As someone or something (the people?) are 'the greater.' I'm guessing.
On Geonosis, the red rocky planet where the final battle happens, they make the Battle Droids, and the winged creatures, crosses between some features of Sebulba, mostly Watto, with a skeletal structure like the battle droids, ARE the Geonosians.
So there aren't "Lessers," guys.
Except if you see the movie at matinee times, then it will be "lesser."
"Oh, gees. I'm so funny. I crack myself up!" - Goose