I'd call that Lindy Hop, with adaptations for the musical difference (rockabilly instead of big-band swing). Steve Pastor might call that very early West Coast Swing, though there's no obvious slot. The aerials are definitely standard Lindy performance moves.
ECS is indeed a creation of the ballrooms, but it escaped into the wild . Most Lindy Hop scenes teach ECS/6-count (often single-stepped instead of triple-stepped) at their pre-social intro lessons, since you can learn enough to have fun for the evening in an hour or even 45 minutes.
"Jitterbug" has referred to a variety of dances in different times and places, often but not always Lindy Hop (locally, single-stepped ECS is referred to as Jitterbug). It's a reference to the wild enthusiastic behavior of many early swing dancers compared to staid ballroom dancing.
The first quote containing the word "jitterbug" recorded by the OED is from 1934 is the Cab Calloway song titled "Jitter Bug" and they quote the 1934 song printed in Song Hits magazine on 19 November 1939 as: "They're four little jitter bugs. He has the jitters ev'ry morn, That's why jitter sauce was born."
ECS, is somewhat of a hybrid ( as are most social dances ).
The injection of Lindy turns for ex. and several other moves, are imports from other sources, that have established themselves as foundational movements. in ECS.
"Bop", actually "Bebop" to be precise, is the name given/used, to the style in the vid .
The US servicemen in WW2, was the first UK intro . in that style,( that's how I learned ) that the "Brits" copied, with the end result becoming Jive .The US took a more "gentle" route with their "swing" versions ..
It's worth noting that, genres develop change primarily, because music tastes change .
The BR world did popularise the swing genre, and modified things, so that it would become more acceptable to the general public .
The AM studios, which many dislike, are largely responsible for its emergence/ development, thru weekly TV shows in the 50s.
Steve has written numerous articles on the subject on this site, which I suggest to anyone, who may be interested in origins, for greater detail .
Based on searches of newspaper archives, Lindy Hop did not become really popular until the very late 30s very early 40s. Shag was the dance of the young, college age demographic, and they were mostly the ones who were tagged as jitterbugs in those pre WWII days.
Earl Barton was in both of the Bill Halley movies. He dances with Lisa Gaye, and Gail Ganley in the two different films. Barton was a professional dancer and choreographer (he danced in 7 Brides for 7 Brothers and had a long career.) To my eye, Barton dances West Coast more so than the others in the film.
Music #2 for WCS was early rock n roll, not blues.