For any one interested - I've been researching the silver pack autos on eBay for the last two weeks. I have not found anyone trying to sell 17 of the players who Topps said have an autograph.
I also found odd differences in serial numbers. For example, red autographs are supposed to be out of 5...but I found two Piazzas on eBay that look red - but are out of 10. Same for Ohtani - but his card looked orange.
in case anyone wants to pick up the baton in this search - here is what I found:
T87C2-1 Juan Soto - Washington Nationals (N/A)
T87C2-4 Nick Fortes - Miami Marlins (199)
T87C2-5 Casey Mize - Detroit Tigers (75 and Orange - 25)
T87C2-6 Marcus Stroman - New York Mets (99 and Orange - 25)
T87C2-8 Willson Contreras - Chicago Cubs (N/A)
T87C2-10 Rhys Hoskins - Philadelphia Phillies (N/A)
T87C2-11 Brooks Robinson - Baltimore Orioles (30)
T87C2-12 Jose Altuve - Houston Astros (30)
T87C2-16 Wander Franco - Tampa Bay Rays (199)
T87C2-17 Teoscar Hernandez - Toronto Blue Jays (149)
T87C2-18 Joe Ryan - Minnesota Twins (199)
T87C2-19 Hyun-Jin Ryu - Toronto Blue Jays (30)
T87C2-21 Whit Merrifield - Kansas City Royals (99)
T87C2-22 Seth Beer - Arizona Diamondbacks (N/A)
T87C2-24 Andre Dawson - Chicago Cubs (Orange - 25)
T87C2-25 Sandy Alcantara - Miami Marlins (N/A)
T87C2-26 Nick Castellanos - Cincinnati Reds (99)
T87C2-27 Dale Murphy - Atlanta Braves (50)
T87C2-28 Jon Heasley - Kansas City Royals (199)
T87C2-29 Dylan Carlson - St. Louis Cardinals (N/A)
T87C2-32 Matt Chapman - Oakland Athletics (N/A)
T87C2-33 Corbin Burnes - Milwaukee Brewers (149)
T87C2-36 Jorge Polanco - Minnesota Twins (99)
T87C2-38 Mike Piazza - New York Mets (red - 10)
T87C2-39 Aaron Ashby - Milwaukee Brewers (199; Red - 5)
T87C2-43 Shane Baz - Tampa Bay Rays (N/A)
T87C2-44 Logan Webb - San Francisco Giants (99)
T87C2-47 Mike Trout - Los Angeles Angels (N/A)
T87C2-48 Freddy Peralta - Milwaukee Brewers (149)
T87C2-49 Mariano Rivera - New York Yankees (N/A)
T87C2-50 Shohei Ohtani - Los Angeles Angels (Orange - 10)
T87C2-53 Jake McCarthy - Arizona Diamondbacks (199)
T87C2-54 David Ortiz - Boston Red Sox (N/A)
T87C2-56 Pete Alonso - New York Mets (30)
T87C2-59 Cedric Mullins - Baltimore Orioles (99; Red - 5)
T87C2-60 George Springer - Toronto Blue Jays (30)
T87C2-61 Pedro Martinez - Boston Red Sox (N/A)
T87C2-62 Josh Bell - Washington Nationals (99)
T87C2-63 Max Muncy - Los Angeles Dodgers (30)
T87C2-64 Derek Jeter - New York Yankees (10)
T87C2-66 Mitch Haniger - Seattle Mariners (N/A)
T87C2-68 Roansy Contreras - Pittsburgh Pirates (199; Orange - 25)
T87C2-70 Jo Adell - Los Angeles Angels (N/A)
T87C2-71 Nolan Ryan - Texas Rangers (30)
T87C2-72 J.T. Realmuto - Philadelphia Phillies (99)
T87C2-73 Carl Yastrzemski - Boston Red Sox (N/A)
T87C2-74 Josh Lowe - Tampa Bay Rays (199)
T87C2-76 Jose Canseco - Oakland Athletics (N/A)
T87C2-78 Brandon Crawford - San Francisco Giants (149)
T87C2-80 Bryan Reynolds - Pittsburgh Pirates (99; Orange - 25)
T87C2-81 Lucas Giolito - Chicago White Sox (99)
T87C2-82 Ryan Vilade - Colorado Rockies (199)
T87C2-83 Kyle Tucker - Houston Astros (149)
T87C2-85 Reggie Jackson - Oakland Athletics (Orange - 25)
T87C2-86 Jose Siri - Houston Astros (199 and orange version - 25)
T87C2-87 Sonny Gray - Cincinnati Reds (30)
T87C2-88 Connor Seabold - Boston Red Sox (199)
T87C2-89 Carlos Rodon - Chicago White Sox (30)
T87C2-90 Wade Boggs - Boston Red Sox (30)
T87C2-92 Stan Musial - St. Louis Cardinals (30)
T87C2-95 Johnny Bench - Cincinnati Reds (30)
T87C2-97 Hans Crouse - Philadelphia Phillies (199)
T87C2-98 Oneil Cruz - Pittsburgh Pirates (199)
T87C2-99 Yordan Alvarez - Houston Astros (50)
T87C2-100 Fernando Tatis Jr. - San Diego Padres (N/A)