Chris Brown, Katie Robinson and Johnny Minardi have been promoted at the Warner Music Group labels.
Platt will have the opportunity to sign and develop talent for a new imprint.
The news comes on the heels of Becerra receiving the Visionary Award at the Billboard Latin Women in Music gala.
The third-largest label marked the second straight quarter of lackluster results for its recorded music division, with revenue roughly flat over the year-ago period.
Slow quarter for new releases puts a drag on streaming revenue, but recent Ed Sheeran and Jack Harlow albums could boost WMG's second half.
Admired by Bob Dylan, Bonnie Raitt and many others, Strachwitz was an unlikely champion of the American vernacular.
Gregg Nadel will now helm the label solo as Easterlin steps into a consultancy role at Warner Music Group's artist services division WMX.
Launched by Sam Koch and former Republic Records exec David Nathan, the label will put a major focus on the well-being of its boutique artist roster.
"Open up your doors to creators and allow them to bring the positive tension this industry desperately needs."
The Puerto Rican hitmaker, who scored a smash with last year's "Me Porto Bonito" with Bad Bunny, is prepping the release of his solo debut album on the label.
