Joneka is of Scandinavian origin, meaning 'like Jane'. It's a variant spelling of the classic Jane, which means 'graced by God'.
"Joneka saw a spike in popularity with 8 births in 1990, but this was not sustained as there were only 5 births each in the following years of 1991 and 1995. In total, there have been 18 babies named Joneka since 1990."