Suggestions by @goldh00pz

Michael B. Jordan

as Lord Radcliffe in A Lady's Guide to Fortune-Hunting

Kelvin Harrison Jr.

as Archibald de Lacy in A Lady's Guide to Fortune-Hunting

Kate Winslet

as Aunt Dorothy in A Lady's Guide to Fortune-Hunting

Ruby Stokes

as Cecily Talbot in A Lady's Guide to Fortune-Hunting

Florence Pugh

as Kitty Talbot in A Lady's Guide to Fortune-Hunting