The Wrestling Observer Newsletter's Dave Meltzer confirmed the news.
Bryant reported Atlas will report to the WWE Performance Center in January.
The 24-year-old reached the quarterfinals of Pro Wrestling Guerrilla's Battle of Los Angeles 2019, falling to Dragon Lee last month. He also competed during the second night of Ring of Honor's Death Before Dishonor show in September. He lost a singles match to Bateman.
WWE announced in December that Atlas was among many wrestlers brought in for a tryout.
Fightful's Robert DeFelice noted he had previously crossed paths with Stephanie McMahon when she was featured on the TV show Undercover Boss. Atlas, whose real name is Kenny Marquez, told her at the time his ultimate goal was to become the first openly gay world champion in WWE history.
According to Bryant, representatives from All Elite Wrestling made contact with Atlas but didn't put a formal contract offer on the table.
Given his age, Atlas will have ample time to hone his skills at the Performance Center before he makes his NXT debut.