The full list is on Matt Winkelman's Winter League page (via Jim Peyton).
One interesting name is Maikel Garrido. 6'4" LHP we signed back in 2018 then barely played in both 2018 or 2019 (and obviously 2020). Guessing he was in Clearwater rehabbing and that is why he is at instructs. I think all but 2 of the UDFAs are there though no additional names unfortunately. Casey Martin and Baron Radcliffe are the only 2 new position players.