Jankowski was No. 43 in NHL Central Scouting's final ranking of North American skaters eligible for the 2012 NHL Draft, earning high grades in skating and hockey sense.
"He was a little bit unknown at the beginning of the year but his skill set was so evident even though he was probably the best player in that entire league (at Stanstead)," said David Gregory of NHL Central Scouting. "You just saw how quickly he read the play, how he handled and moved the puck with speed and always to the right spot. It didn't matter what the situation was, he was making good decisions and as he played in games that were higher level, you saw how quickly he adapted to the level he was at.
"He's done that throughout his whole career and was a dominant player at Providence College."
Jankowski had offers from Boston University, Cornell, Harvard, Maine and Penn State, but he had his sights set on playing for Providence coach Nate Leaman.
"It was during my four seasons at Providence where my defensive side of the game really improved," Jankowski said. "Playing under Nate Leaman really helped me in learning both sides of the puck, using my big body to protect pucks, and taking it to the net."
Jankowski had 110 points (43 goals, 67 assists) in 148 NCAA games over four seasons. He scored a power-play goal in a 4-3 win against Boston University in the 2015 NCAA Division I men's national championship game and had 40 points (15 goals, 25 assists) in 38 games as a senior the following season.
Jankowsi had 56 points (27 goals, 29 assists) in 64 games during his first full professional season with Stockton of the American Hockey League in 2016-17.
"Being in the minors helped because I got to play in all situations and the coach had a lot of trust in me, which helped my confidence and overall game," Jankowski said.