TV Shows tend to me done with PC ideology. The great thing about DNA is will tell the story. The Olade et al 2019 paper to me hits on point. There are 171 samples from 2000 BC till the reconquest period in the late 15th. So you go through the Phoenicians having sea ports in Iberia, North Africa, Roman periods in North Africa and Iberia when both were part of the empire up to 711 AD when the Muslim invasion occurrred, no SSA ancestry in no samples, you have to get to the period 10th-16th century were 2 of 24 samples show some SSA ancestry.
So with that many samples, I think basic statistical theory when N=30 are greater, central limit theorem kicks in and the distribution should approximate a normal distribution, could be off if the samples are not representative of the broader population, but still should give us good basis to make inferences. What it tells us is that the invaders in Iberia were Berber-Levant ancestry. As the Umayyad Caliphate expanded further South and started caravans with kingdoms in SSA around 1,000 AD, they acquired more slaves from that part of the world and you see that show up in the data in the period 1000-1600 AD.
So regardless, it refutes the American Black Afro-centrist narrative that the "Moors" who invaded Spain in 711 AD were Black SSA. Not true the same way the Verena J. Schuenemann et al 2017 paper "Ancient Egyptian mummy genomes suggest an increase of Sub-Saharan African ancestry in post-Roman periods" refuted the ancient Egyptians were Black SSA.
