These Blacks probably from the Caribbean and Latin America, many Spanish-speaking. Such are census figures- they require study.
I haven't spent enough time with the figures; there are apparent inconsistencies which are reconciled when one goes to other tables.

The news story about Hispanics exceeding blacks is not new; the figures show Hispanics were ahead by about 0.2 % at the time of the 2000 census. I don't know why the media picked it up now.

In my Canadian prairie city (metropolitan 1 million), the largest minority is Chinese, with 22 %. Many Vietnamese, Sikhs, East Indians, and Middle East Christians and Muslims being displaced by continued Israeli and other pressures. Haven't seen the detailed census for the country.

Until this last census, Americans from the States had to be identified by their country of racial origin. I picked Irish, although I am moe or less 1/4 Irish, 1/4 English, and 1/2 Hispanic by actual count. The Hispanic is 1/2 from Spain, 1/4 American Indian, and 1/4 mixed from 16-17th century Spanish settlements in what is now New Mexico.