Joaquim Cruz looks nothing like Michael Jeffrey Jordan. Unlike some, I don’t judge someone as being of a particular racial group based purely on the colour of their skin. I have 3 mixed raced nieces, two look more like my sister and the other more like her Jamaican father. Their skin colours are also slightly different. That doesn’t mean I look at them as being of different racial backgrounds. But at the same time I also don’t lump them together as one homogenised group.
I am fully aware of the basic history of Brazil, and know that (as with most nations) there is a wide variety of nationalities that have mixed over centuries. I also know a bit about Brazilian middle distance runners from the era. To me, Barbosa looked like he clearly had an African heritage, whereas Guimares and Cruz looked more European/Latino, and could pass as Spanish or North African. Same as Juantorena from Cuba. Cruz’s name derives from the Iberian peninsula, and I’m not going to patronise you as to what that means.
Cruz, both through his name and appearance, clearly has strong European roots in my opinion. And many Spanish have North African and Arabic roots, which are also considered Caucasian. As is Coe, who is a quarter Indian.
The point I was making, indirectly to someone who claimed Coe was likely a doper based on the fact no other white man had run under 1:42 and that the other two men that have run faster are black African, is that Cruz ran within a foot of Coe’s time only 3 years later, and that he too was not a black African.
For someone to imply that only black Africans are capable of running such times is a nonsense, and both Coe and Cruz do not fit into the same category as Kipketer or Rudisha.
‘Caucasian’ is a generic term which covers diverse racial groups. It also, as you appear to acknowledge, has many different definitions. Based on the definitions I gave (from the Internet, not my own made up definitive definition, as you seem to imply) Cruz fits into the category of Caucasian.
Posting photos of a darker skinned African American with a name that could suggest he could be a white European is a bit silly to be honest. It could also be taken as offensive.
You clearly have issues with me trying to suggest that Cruz and Coe have something in common that makes them different from Rudisha and Kipketer! It wasn’t my intention to offend someone with these observations, which it clearly did for you. I see them both as great 800m runners who happen not to be Kenyan! That was the beginning and end of the point I was making.