I think there's a lot of generalizing going on and a lot of confusion of terms. The Berbers of North Africa are those North Africans who have retained at least a partial use of the Berber language and some degree of their tribal structure and their ancient culture. They are usually pretty endogamous. The level of SSA among them varies depending on the tribe and the country. Some, like the Mozabites, have quite a bit.
Other groups look like they have a lot less, and some among them just look southern European:
Likewise there are a lot of North Africans who don't primarily identify as Berbers. They also vary in terms of SSA admixture, with some urban, upper class people not showing a lot of SSA but most of them showing what is close to what the studies say, which is about 20-25% SSA ancestry.
The people who have gone to Europe recently do seem to have at least that amount of SSA ancestry. On the other hand, the ones who have 3-5% would probably go unnoticed. There are a lot of white South Americans with that amount of SSA.
All this commentary about what Berbers looked like (i.e.how much SSA they had, which seems so important to people) in the early Middle Ages when some of them went to Europe is just speculation. From contemporary depictions, it seems that some predominantly SSA people were part of the forces, and undoubtedly some mixed people also participated. Many probably looked pretty similar to southern Europeans. We just don't know. Nobody was around to do a scientific study.
This stuff about famous Spanish actors is just silly. They look Mediterranean, which should hardly be a surprise, and that goes for Penelope Cruz too. And yes, there are Sephardic Jews who look a bit like her, but it's not because she looks like a Sephardic Jew, because she doesn't; it's because Sephardic (and North African) Jews can sometimes look pretty generically southern European.
Probably this is a more common look, however.
Sigfrido:I see North Africans on daily basis and the Cruz sisters can blend among them easily
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Most North African women in Europe don't look like Penelope Cruz at all, and not just because she's a beautiful actress. There are consequences here for deliberately provocative comments.