El was the father of Yahweh(early polytheistic Judaism), along with numerous other "son gods". "Yahweh" had "brothers".There appear to be two main lines of reasoning to explain the origin of the name. The first suggests that it is the shortened form of a sentence used in worship, "he causes to be" or "he creates", from el du yahwi seba'ot, "el who creates the hosts", meaning the heavenly army accompanying the god El as he marched out beside the earthly armies of Israel.
It's two examples of the different regions/tribes and the predominant deities worshiped by each one.
"In the case of the Hebrews, the cult of Yah, or Yahu, or Yahweh, was simply a local worship sometimes aggrandised by the King, adopted and documentally imposed on the fictitious history of the nation long afterwards." M. Lang, Making of Religion, pp. 190-8.
As the Semitic cultures/tribes merged and became unified as a single people, "Hebrew", what is known as Judaism, followed soon after, once they worked out the "deity details", and that didn't happen until the Babylonian exile period.
Yahweh was originally known as Yahweh Sabaoth(the convenient spelling of what you pointed out above), and meant "he who musters armies", or "the commander of armies" is another variation. "Hosts" is often substituted, because it sounds less ominous, but even that, means armies. "Yahweh Sabaoth", was a war god.
Back when those early Semitic peoples were polytheistic, Yahweh was a god right along side of Ba'al and Asherah, before the Judaic move to monotheism. Yahweh and Ba'al were the sons of EL. Taken from the older Caananite pantheon of deities. At one time Asherah was the wife of EL, and later became Yahweh's consort.
For all information - biblical, historical, scientific etc..., I endeavor to draw from accepted, reputable and scholarly sources.Instead of getting info from atheist sites, Christian sites or from ex-Christians, you should get your info from non-bias sites.
That they may be found on whatever site, makes no difference, as long as I can cross reference and find that info is supported in accredited academia.
I don't source some guy that received a diploma from a double wide "University" somewhere in Arizona that has had 4 addresses in the last five years.