Madden 18 has brought with it an updated roster. During the off season the team at EA Sports calculated which players should receive increased or decreased stats. This has significantly affected the metagame, pushing new teams into popularity.
This year the New England Patriots, Atlanta Falcons, Dallas Cowboys, and Pittsburg Steelers have the highest overall stats. The Patriots in particular are well-likened among veteran players for their strong offensive line and passing game.
In terms of player ratings, a Madden player by the name of jbirdwell as put together a document which includes the full ratings for every team and player.
You can view the document here.
Be sure to check out our official review of Madden NFL 18 to get an idea of what we thought of it as Madden veterans.