Most of Nilo-Saharan languages
I believe Nilotic is quite solid - except for Southern Nilotic (only spoken by Kalenjin-Datoga) which is quite different.
So many - for example Kalenjin ideally should be Nilo-Cushitic language. Kalenjin have about half cognate/root words that are nilotic and half that are cushitic.
Cognate or root words are NOT LOAN WORDS.