If reading the stories in the Keltrian Universe, the best order to read for linking of characters between stories is Delta, Storm, Trixy, Coercion, The Job, Tempest, At a Price, The Herds and then Cataclysm.
The Dusty and Tara books are also linked to previous books. The Gifted series is at present a separate entity.
For information about my Universe go to: https://keltria.fandom.com/wiki/
To purchase some of my stories go to: https://bookapy.com/a/13/kris-me