Anecdotal experience: From experience (I'll refer to Iberians as Spaniards), Spaniards have the largest variety in looks in all of Europe, much more than you'd see in any other country, which is not surprising considering both the size of the peninsula (larger than the euro part of France) and ease of isolation within the land, and I've traveled over many european countries.
There are a lot of people here who overlap with the whitest NA, especially because many people in NA are descendants of mediterranean europeans, just as there are many, many people who overlap with northwestern europeans, in terms of looks.
Spamming pictures to prove either whiteness or darkness is kind of pointless because I could easily make spaniards look British or North African by cherrypicking photographs from my list of friends in facebook.
There's also a distinct North/South gradient in what we could consider fair features to add to the already large disparity in looks. Such gradient exists in Germany as well for example, a Bavarian can be quite different from a man from Holstein, and this I've seen first hand, but it is larger here. Anecdotally there is also a West/East gradient peaking near the Asturias but honestly I never noticed it.
About genetic clusters, they are somewhat useless in determining features but we tend to cluster somewhat in the middle of French and N.Italians
Recent research also indicated a large disparity in ancestry between Northern and Southern Spaniards.
To reply to some of the quotes:
they are ethnik as fuck
Some here do look ethnik as fuck
Overall, I noticed that Spaniards and Portuguese are the darkest Europeans(obviously excluding Sicily, Malta, Greek Islands, etc.) This was also what anthropologists like Coon noted.
This has recently been proven wrong. Coon's research is over a century old and he purposely cherrypicked data to fit the model of the time, that both the Spanish Empire and the Portuguese one started decaying from the influx of slaves, which records from the time prove to be wrong, and also the fact he went to the only large slave town in the entire peninsula and extrapolated data for the whole Southwestern/Southern region, which is frauding.
Recent studies on the pigment of skin for a larger cancer study also proved that out of all southern euros we tend to have the fairest skin (not surprising given our western condition and the fact that it's Northwestern euros who have the whitest skin out of everyone, but they aren't the blondest nor the most Germanic), but I can confirm we have a tendency for heavy, wide eyebrows for example.
I can probably post the source for any claim which I did not mark as anecdotal to back it up, if you have questions about anything here I can answer