I think to answer your question you need to take another look at the top right hand corner of the post.
It is stylised art, they are not trying to be photo realistic with these shows. The white characters are few and far between but they also have the same hard edges to them and coincidentally all work for the empire (the actual bad guys in the bad batch). To anyone who has seen the movies it is pretty obvious that all the clones are Jango ... anyone offended by it will be the same type of person who is always looking to be offended by anything.
The bad batch all have slight differences about them physically to make them stand-out and be more memorable, nothing to do with race but everything to do with familiar stereotypes. The smart one has a slightly washed out sickly complexion because it suggest that he spends a lot of time in doors reading books / playing with computers rather than being outside ... he even wears glasses. He is objective / factual about everything and takes for granted that other people will be able to work out the same complex things he can so doesn't bother explaining them. The big one is strong with a heart of gold but a bit slower in the brains department, he is also physically scarred on his face with burn marks because he likes explosives and is a bit reckless. He is built with a lot of muscle, he would look out of proportion with a tiny skinny pin head. The tracker / hunter character looks just like Rambo, because he is meant to make your brain visually connect him to the qualities of Rambo without them needing to spend screen time explaining it to you.
The one character who has the most 'white' character traits to him is Crosshair, the sniper / assassin who is also one of the main antagonists in the show (so not surprising really). He is cold, calculating, speaks in a monotone without emotion and never questions his orders even when they are morally suspect / bankrupt. Physically he also has a whiter / sallow complexion, suggesting he keeps his helmet on a lot because he is effectively a faceless soldier. He has a leaner frame and speaks with a sneer which to me evokes a sense of a lower class English rogue / unsavoury character (unlike the officers of the Empire who are more akin to English gentry). He is built like a stereotypical villain and not heroic in the slightest.
This was all done to make the clones appear more individual but also to shortcut your brain into instantly figuring out what type of person each character based solely upon their physical appearance and voice in the show.