The Clinton Camp is definitely active ... just look at how the DNC is packed with Clintonistas. Barney Frank is co-chair of the rules committee - he purportedly hates Sanders. I thought I read that he’s the one who appointed John Podesta (the Bernie Bros are screeching over that one) plus there are other Clintonistas heavily involved.
As for the Obama camp, I’m not sure who he wants to see - Kamala is out & I think I heard that’s who he favored. He’s certainly not into Bernie or the rest of the “white people” running. He may have some interest in Mayor Pete, but I would think that would be more hot tub related rather than political .... [snark].