A mix of Golden Age and contemporary mystery writers in no particular order, except for Margery Allingham. She’s first because you have to read her. My introduction to her writing was Tiger in the Smoke.
Margery Allingham
Ngaio Marsh
Dorothy Sayers
Georgette Heyer
Edmund Crispin
Cyril Hare
Gladys Mitchell
Josephine Tey
Marion Babson
Carolyn Hart
J S Borthwick
Margaret Maron