The big ones are pure redears. Almost all of those smaller fish hovering are smaller bluegills. I suspect horned up males lol.
We do have some hybrid bluegills in the lake however there aren't any in this video. I've observed that the redears sure do seem to prefer their own kind though after watching them for a few years now during the spawn and they are very aggressive to defend their beds. They throw their weight around very well compared to the gills!
We have some real nice redears in the lake finally and have had to implement a strict catch & release policy on any 9-1/2" and over to protect them. We had one break the 10" mark earlier this year, which for us on this particular body of water is an accomplishment.
We used to see a lot of snails washed up on our shoreline from time to time, since we introduced the redears we don't see nearly the amount of snails present, not even close. I don't typically see the redears at the feeder, they may be using it, but I don't see them at the surface feed. The bluegills are a different story and they go to town once the larger bass and the catfish have had their fill.