Correction, Berber Jews always existed since they converted to Judaism 3000 years ago and also 2000 years ago, but they are NOT a mixture Of anything, they are actually fully ethnic Berber as it can get. These are Berbers who just converted to Judaism thousands of years ago. Berber jews back then were never called Mizrahi, as Mizrahi was specifically referred to as eastern Jews of the middle east only. Berber Jews only later in modern times started being called Mizrahi recently after they chose to carry that title instead of choosing to call themselves Sephardic. Yea the real Sephardic who came from Iberia to Morocco are the ones who became the mixed ones, they are the ones who became mixed with berber and as result, they are now far more Berber in genetics today than Iberian by comparison in their dna. And real Sephardic was a very small minority (10k) as stated, that didn’t even make a dent in the Moroccan population as they got absorbs very fast with the large Berber population of both berber Jewish and berber Muslims community, when they intermingled with berbers Then just less than 150 years later the Sephardic was completely absorbed and became mostly berber ethnic rather than Iberian. With closer to zero difference in genetics today. As they were too few less than 10k, while ethnic Berber jews were like closer to a half million. This never affected native Berber jews. And berber Jews today still make up the vast majority of being fully ethnic berber. And not mixed. And Before Islam, they were in millions of berbers carrying Judaism as their religion before berber converted from Judaism to Islam and from Pagan to Islam