Thanks snowstar. Sophie is Sorreltail, and as you said:
Leah Trono = Leafpool
Skylar Trono = Squirrelflight
Corbin West = Crowfeather
Brandon King = Brambleclaw
Tanya King = Tawnypelt
Sterling River = Stormfur
Faye River = Feathertail
Sophie Jefferson = Sorreltail
Cindy Reed = Cinderpelt
Ashton Sanders = Ashfur
Firenze Trono = Firestar
Sandra Trono = Sandstorm
Hayden King-Allen = Hawkfrost
Brian Collins = Brackenfur
Nikki Shultz = Nightcloud
Oliver West = Onestar
I'll add more to the list as we go along, so check back here whenever new characters spring up so you know who they are.