11 of those sides have already been announced with the likes of the ACT Brumbies and the Auckland Blues representing Super Rugby while Harlequins and Northampton Saints will be there from the Aviva Premiership.
In addition club sides from Russia and Argentina are included while for USA it will be the San Francisco Golden Gate team who have been drawn in Pool B and the New York City Sevens who are in Pool A.
The national sevens side enjoyed a strong end to the HSBC World Sevens Series campaign and Snyder is backing his club sides to carry that momentum through to the club contests.
"This is a club tournament of course but nothing really changes for us, we will go into the competition with very high hopes," he said.
"It's a great chance for the lesser known guys to step up and the Eagles have been in great form at the back end of the World Series so we are feeling good.
"It's a real honour to have two American teams selected for the tournament.
"And we are really hopeful about what will be a real test for both the teams and a great chance to chart our growth and development against the best teams in the world.
"These are the sort of steps that we need to be taking and we will go there full of confidence."
San Francisco Golden Gate has been drawn in Pool B against Buenos Aires, Northampton Saints and Vodacom Blue Bulls while New York City Sevens will face the winner of the J.P. Morgan Premiership Rugby 7s, VVA Moscow Region and DHL Western Province in Pool A.
Both club sides will be boosted by the inclusion of a number of the Eagles players, fresh from the end of the international series, who will line-up alongside the club players.
And while the exact make-up of the squads is not yet clear, Snyder insists the coaching set-up are itching to see who steps up to the plate against the best teams in world rugby.
"We are looking forward to the tournament across all aspects but of course the chance to run out at Twickenham is just fantastic," he added.
"Some of the Eagles players will be available and we will be putting them into the two team to augment them.
"Which players go into which team will depend on who the coaching set-up want to see in combination with who and where.
"But also we will try and factor in where each player is from so we can make that work as well.
"It is not just about our international players though, far from it, it's an incredible opportunity for some of the younger players who are on the cusp to step up and show what they can do.
"This is the stage that we want American rugby to be on, these sort of high profile events at the big rugby stadiums in the world.
"What a tremendous experience for those guys who will never have been on that sort of stage before, they can put their hands up and really show that they deserve to be out there."