Black characters references

Hello everybody! I've been thinking about making a web comic with characters from different ethnicities but I realized that I don't have a lot of references of black people in manga/manhwa. I was hoping that you could give me some recs so I can focus on the art part and not end up with a white washed character I can color diverse skin tones just fine but since I plan on making it b&w I'm not sure how to approach it... For characters with lighter skin tones you usually just draw the outline but that won't work here. I can study facial features by myself but color is a different deal for this particular style.

Thank you in advance!