He lifts mostly on Klokov Bumpers -

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Nothing wrong with them, they followed the color code, they were beautifully designed bumpers, but the brand didn't survive.
The thin orange yellow bumper is a Fringe Sports Pizza novelty plate, they're 10lbs a piece -

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Edit at 2:37, the black might be a Rogue #55, unless he swapped it in the jump cut, there's also a thin pair of 10lb irons -
4 x 25kg, 2 x 20kg, 2 x 15, 2 x 10kg, 4 x 10lbs + Bar = #504/505lbs.