First video looks like an inside snap roll into a knife edge spin. Can be done easily on a model.

Second video looks like a harrier loop. I've seen it done on a 40% Extra.

Third video looks like an inverted low pass. I've done it with my Warbird Corsair.

One manuever I've not seen on a model is a consecutive double hammerhead. I've seen that on a full scale Pitts.