Which nations were the Cherethites and Pelethites?
Divrei Hayamim I - I Chronicles - Chapter 18:17 And Benaiah the son of Jehoiada was over the Cherethites and the Pelethites, and the sons of David were first at the king's hand.
https://www.chabad.org/library/bible_cdo/aid/16538/showrashi/true
Rashi calls "the Cherethites and the Pelethites" "nations".
Which nations, therefore (on a pshat level), were the Cherethites and Pelethites?