Your reference does not say they were distinct, it says they were the same and that it was Abrahams God.
Ah, I see. The problem is that you are seeing what you want to see. No, it doesn't. It specifically says that Yahweh evolved from EL. Remember, Evolved from and change into with a different name and divorced from his wife by the time of the Israelites isn't at all "the same as". It's quite plain to see, from yours and other reputable references, that the Israelites worshipped Yahweh as we as other gods, Yahweh have evolved over centuries from a local minor God to have taken on the properties of EL, with writers eventually merging the two.
In the rest of the Semitic peoples religions, however, El and Yahweh remained distinct. That merging and evolution was a later event that only happened within the Hebrew culture (Abraham wasn't Hebrew, BTW).
Actually I did it for you, this quote is confirmed by literally everything. Spend as much time as you want with Google, by as many books as you want - if they are credible sites and sources they will agree:
OK, let's see what it says...Modern scholarship increasingly sees the phrase not as one genuinely used by Jesus but as a one put in his mouth by the early Church.
So, by your own source that you cite as reputable, to the point that any reputable source would agree, it's a phrase used by Jesus but a lie later added by the Church. I would absolutely agree, that does make it unique and different from other OT uses.