Modeling and acting agencies for commercials

Does anyone actually know any agencies that'll get you out there for real commercial auditions or TV series? I know about Earth, but they barely send anyone out, and The Beach Boys are mostly just looking for background extras...

...but honestly, I see plenty of background actors from The Beach Boys in commercials and TV shows all the time—it just goes to show that those small steps really do count. If you’re willing to put in the work and stay focused, you can actually reach your goals! As for anything else, I don't know much about that personally!

So, which other agencies are we talking about here?
I heard there’s an agency run by that girl from Los Angeles—the one who sends young models out for castings like this.
Anyway, could someone please drop the websites for the ones you guys already mentioned?