The Patriots have based their offence this playoffs around controlling time of possession so a heavy focus on the run game and short passing. They don't have a huge amount of big name players as Belichick hates overpaying for players and Brady (aided by a strong offensive line) lets them get away with less superstars on offence and scheme does the same on defence. Michel will probably get most of the carries, White will be a threat coming out of the backfield for passes. Edelman will probably be Brady's favourite target and Gronkowski is an all time great at his position but wear and tear is catching up with him. On defence Flowers, Hightower and Gilmore are probably their most important players but some no name will probably make plays as well.
The Rams have been an offensive juggernaut with (just turned) 33 year old head coach Sean McVay leading the way, which has lead to claims that 3rd year quarterback Goff is a 'system' quarterback but nevertheless he's played very well. Gurley at running back has been the star player in the regular season being a powerful runner and a receiving weapon but played a very limited role in the last round despite apparently being fit. They have loads of receiving weapons with Woods and Cooks being the stars. On defence Donald is their star player and possibly the best player at any position in the league. He's an absolute gamewrecker but the Patriots are great at neutralising star pass rushers. He's partnered in the middle of the defensive line by Suh a big name player who came in as a free agent signing this year. Had a poor by his standards regular season but has turned it on in the playoffs. Other big name acquisitions are at the cornerback position with Peters (who hasn't been great) and Talib having the ability to lock down receivers and create turnovers.
There's loads of great matchups all over whether on the field or in the coaching box but I feel there's a bit of Patriots fatigue set in so it's not as hyped as it normally would be. The last two Superbowls were classics so there's a lot to live up to as well.