Pembroke or Cardigan
Two distinct breeds, related but separate. Pembrokes (no tail, slightly shorter, more fox-like) are the Queen's breed. Cardigans (full tail, slightly larger, rounder ears) are the older Welsh variant. We read which you have from your photo and renders accordingly. Tail or no tail, ear shape, and head proportion all carry through correctly.
Why Royalty is the obvious match
The breed's seventy-year association with the late Queen makes Royalty (Queen, Duchess) the visually inevitable choice. The dignified pose lands without irony — these dogs actually walked the corridors. Pop Art works too for the inverse reason: the fox face and big ears read as graphic icon. Highland and Meadow honor the Welsh herding origin.
Coat color tunes the palette
Red Corgis with white markings catch warm scenes (Autumn Forest, Sunset) most readily. Sable Corgis add a tweed-like depth that suits Library and Knight. Fawn Corgis sit cleanly in Meadow and Garden. Black-headed tricolor reads as the most graphic option and suits Pop Art and Royalty equally.