Top players left on my board:
WR
Tee Higgins
Denzel Mims
Bryan Edwards
Tyler Johnson
Donavan Peoples-Jones
RB
Jonathan Taylor
JK Dobbins
Cam Akers
D'Andre Swift
AJ Dillon
OT
Ezra Cleveland
Matt Peart
Josh Jones
Lucas Niang
Jack Driscoll
C
Lloyd Cushenberry
Matt Hennessy
OG
John Simpson
Damien Lewis
DT
Jordan Elliott
Edge
Curtis Weaver
Julian Okwara
LB
Malik Harrison
CB
Kristian Fulton
S
Antoine Winfield Jr
Grant Delpit
At 39, I'd narrow it to the WR's, Cleveland, and the Safeties. All other players listed are in play at 56. To be clear, I think Miami can get Edwards and Tyler Johnson later, so I'm not advocating they pick either at 39 - just that they're both good enough to draft that early.