No way to really know until we get to Opening Day, but until then best way is just to keep an eye on the 40 Man Roster.
Right now I count at least 18 guys from 2022 that have somewhere between a sure and decent shot at being on the Opening Day roster...
Position Players (8): Caratini, Rowdy, Urias, Adames, Brosseau, Yelich, Taylor, Mitchell.
Pitchers (10): Ashby, Burnes, Bush, Houser, Lauer, Milner, Peralta, Strzelecki, Williams, Woodruff.