That year the projected 1st and 2nd Overall picks were locks in Center
Jack Hughes (who went 1st to the Devils), and Winger
Kaapo Kakko (2nd to the Rangers) but there was SOME (key word some, not A LOT, some) speculation on who the would go 3rd Overall to the Blackhawks. Some believed they might follow their previous draft strategy and reach slightly to draft local in Forward
Alex Turcotte, others believed dynamic Forward
Trevor Zegras was a possibility (He has also said in interviews since the draft that he thought he was going to Chicago on Draft Night: via the Spittin Chiclets Podcast). Then there was the prospect who the majority of analysts and scouts had ranked as the 3rd best player in the draft in defenseman
Bowen Byram. While he was believed to be on the cusp of being ready to play in the NHL that fall, some speculated he would spend another year in juniors to develop. Whether he ended up going 3rd was a basis off team needs but everyone knew he would be the first defenseman off the board (and he was, but at 4th). Which is some believed given their Lottery Luck (And bleak group of defensive prospects outside of the now gone
Adam Boqvist) that the Blackhawks would take Byram at 3.