The first two are from Cortot's preparatory exercises for Chopin Etude opus10/1...
My hand cannot reach a 10th so I have to reach and sort of 'jump' to the upper part of the chord. The first exercise seems the bigger challenge where my wrist sort of 'swings' to make the reach.
EDIT
I removed the example for Etude No.7 to focus on the thumb issue in Etude No. 1.
I found this slow-motion video of Cortot's hand. Althought I don't know what is being played, because it is silent!
Cortot's thumb is obscured by the angle of the camera view, but it looks like he releases finger 5 quickly and does not contract his palm to move the thumb up to the next key.
When I say contract I mean this...
...where I'm holding finger 5 on the E
key while my thumb is moved to the C
key. I have to squeeze or contract my palm to get the fingers to the keys in this manner. As if my fingers walk along the keyboard like a spider.
By comparison, if I don't contract my palm I have to rapidly shift my hand position up the keyboard. It's sort of like maintaining a 5-finger position and not contracting and stretching my hand, but shifting my hand position from my arm...
I'm not really sure how to handle this, because I see this video where clearly the pianist is contracting his palm to bring fingers 1 and 5 close together...