Which part of Africa? Blankets statements never work of course but if we are gonna do that. Lemme put my 2 cents in as an African breh.
Kenyans, Malawians, Zambians, Burundians are just about the best people you will meet ever.
West Africans are the most brilliant, talented, confident and athletic Africans(most Black Americans). Hence all the white people fished there for slaves. Nigerians, Cameroonians etc dominate wherever they go. And Lord knows you gonna hear of em when they're in town.
Ethioians, Somalians think they are better than other Africans and do not like to associate much with em.
South Africans, which I am, are currently enjoying the effects of last remaining Fossil Fuels. No South African really knows what being a true African feels like(empty stores, no water, no power, civil wars etc) Thats why we are very Xenophobic. Lots of ignorance around here which is ironic coz the whole continent rallied for us to get our freedom from the boer's.
What you will find everywhere though,is that Black American are the most commonly adored people among all Africans. Yes there will be(outliers) videos here and there that question y'all and the direction the culture takes. But go anywhere in Africa and say you black American and you will be famous in no time. The style, the music, your heroes etc. It's all celebrated here too.