Jeremy sends us this report based on facts gathered from the PS2 game Jedi Starfighter. Small potential spoilers ahead, so skip if you're completely spoiler-free:

Just finished playing the Geonosis battle in Jedi Starfighter, and learned the names of the vehicles in the trailer that are unknown.

The ones with the big wheels that are shredded by the Gunship missiles are IGB Droid Tanks from the Intergalatic Banking Clan.

The four-legged droids with the "death star-type" laser cannons on the center ball are CG droids from the Commerce Guild.