Brees was an All-Rookie with 1,137 Yards, and he was ninth in that stat and Receptions (92). He improved in 2017 with 1,245 Yards (6th), and he increased his Receptions to 104 (3rd). That would give Thomas his first Pro Bowl, and as good as that year was, he would only rise from there.
Thomas led the NFL in Receptions in both 2018 and 2019, and in the latter year, he led the league in Receiving Yards (1,725) and was named the Offensive Player of the Year.
Although Thomas has only been in New Orleans for four years, his production has been so good that be belongs at a spot this high. Thomas may not be the all-time leader for the team in Receiving Yards, but he is arguably the most potent Wide Receiver the club has ever had.
Still, with New Orleans, Thomas should make the top ten shortly.