I disagree that the first source has an agenda, it seems more that she’s just enthusiastically describing her subject matter. She cites other scholars and artwork, which isn’t necessarily anachronistic as it was made at that time. I’d say the same about the second source.
Here’s some more art work being described. The source is approachable and meant to encourage further reading for anyone interested, https://www.thehumanityarchive.com/articles/black-people-medieval-europe
For the last source, maybe that person had a pov to sell so it does make them less reliable, but if other historical artifacts or sources prove them right, then overall point of this remains the same.
The reason I brought it up was because someone said colored POC didn’t make sense in a medieval Europe game setting. I agree that there were probably less of them, but including the presence of such people in a game setting is just reality. Why is that such an issue for people? Those people need to get over it.
Here’s more scholarly resources https://www.oxfordbibliographies.com/display/document/obo-9780199730414/obo-9780199730414-0326.xml
And a more approachable one, https://www.open.edu/openlearn/history-the-arts/history/deconstructing-the-moors-black-presence-the-united-kingdom-and-during-the-tudor-period