Here are some lesser names and some prospects
Ian Happ- depending on playing time. Basically equal to Yoan Moncada
Keston Hiura- mid 2019/2020. Projects to be a 2B or CF with the 2nd best hit tool in the minors
Bo Bichette- mid 2019/2020. Top 10 prospect overall and will get lots of playing time when ready. 25/20 potential
Tatis Jr- 2019. #2/3 overall prospect. 20/20 potential at SS
Franmill Reyes- really good power profile. Playing time should be there
Adalberto Mondesi- basically a cheaper version of Trea Turner based on projections
Billy McKinney- someone will have to play OF for the Blue Jays. Looked good parts of last year
Teoscar Hernandez- Big time power potential with bad defense, so who knows. Also, see above
Dan Jensen- should be starting C for the Blue Jays. Top 40 propsect. Really good hitter with power
Josh Donaldson- bounceback coming. Health dependent
Josh James- if he gets the #5 starter job he could be an ace in the making. Top velocity
Alex Reyes- Future Cy Young winner. Complete package. Injuries though
AJ Puk- most likely 2020 but who knows. Coming off Tommy John. Probably in the minors this year, but best strikeout man in the minors
Chris Paddack- mid 2019. Quick rising. Great fastball and "bugs bunny" changeup. Ace potential
Ryan Borucki- really solid rookie year for a young SP
Aaron Sanchez- wild card health. Still young with some good seasons already, including an ERA crown
Marcus Stroman- wild card health. Still young as well with lots of potential
Jo Adell- late 2019/2020. Similar to Juan Soto
Royce Lewis- late 2019. SS version of Adell, but with more hit/speed combo and maybe less power potential