The phone mounts are generic portrait phone tripod mounts. Looks like these ones.
The other bit... Not so sure. It looks like a flash bracket.
Can't find that exact model, but you could make something similar with this one combined with some Cold Shoe Ball Mounts. Bit bigger than you need but struggling to find a triple mount that's horizontal like that!
The phone mounts are generic portrait phone tripod mounts. Looks like these ones.
The other bit... Not so sure. It looks like a flash bracket.
Can't find that exact model, but you could make something similar with this one combined with some Cold Shoe Ball Mounts. Bit bigger than you need but struggling to find a triple mount that's horizontal like that!