Some heavy re-seeders I've experienced include:
Golden Rod
New England Aster (wild asters in general)
Annual Sunflower - Kong
Dame's Rocket
Nigella
Fall Clematis
Lemon Balm
Hummingbird Vine
Maximilian's Sunflower
Bidens
Poppy
Mints
To a lesser extent - Rudbeckia and Coneflower, Blackberry Lily, Physalis (Ground Cherry), Chives, wild Blue Phlox.
Many of these might have different colonizing behavior patterns due to geology unique to your new area.
