"Blend of Ja and Michael"
The name Jamichael is commonly a male name from the "English" origin.
Jamichael combines the opening element Ja-, which appears in a number of modern American names, with the established given name Michael. The earliest US birth record for the spelling dates from 1975, which fits a modern American coinage rather than an older naming tradition in any language. No meaning is attached to the combined form beyond the name Michael itself.
The pronunciation of Jamichael is juh-MY-kul.