NRL stars Jason Taumalolo and Valentine Holmes' stocks in the NFL are on the rise.

A week after they worked out for 14 NFL teams including the New York Jets, Philadelphia Eagles and San Francisco 49ers in Los Angeles, two new teams - not represented by scouts at the two-hour session - have shown interest in signing the duo.

AAP understands they might offer invites to Taumalolo and Holmes to fly to the US for individual workouts.

The interest comes as National Football Scouting (NFS) president Jeff Foster, who ran the session at LA's Loyola High School, sent video from the day to NFL teams.

The video clips shot by NFS show North Queensland's Dally M-winning forward Taumalolo and Cronulla winger Holmes undergoing athletic tests and skills, including the 40-yard dash, cone drills and speed and agility exercises where they were required to catch a gridiron ball on the run.

NFL scouts and player personnel directors will analyse the information to determine if their skills will translate to American football and whether to invite the players back to the US for individual workouts.

They will also examine footage from their NRL games.

The impact of Jason Taumololo will be a major factor for both New Zealand and Australia in the Four Nations final. Photo by Nigel Roddis/Getty Images

Attending the LA session were scouts from the Jets, Eagles, 49ers, Kansas City Chiefs, Chicago Bears, Jacksonville Jaguars, Indianapolis Colts, Buffalo Bills, LA Rams, Cleveland Browns, Arizona Cardinals, Green Bay Packers, San Diego Chargers and the Seattle Seahawks.

The players' Australian manager Chris Orr said four NFL teams immediately expressed interest in Taumalolo and Holmes.

"We have had a lot of interest since the workout and it all seems extremely positive and well received," Orr said.

"I am now letting Jason and Valentine enjoy their much-deserved break."

Both players, who were inspired by rugby league international Jarryd Hayne's stint last year with the 49ers, said it would be a dream come true if they were signed by a NFL team.

They are contracted to their NRL teams for 2017 and say they will fulfil their contracts, but that could be tested if NFL teams attempt to entice them to the US for the 2017/18 season.