Each world exists in its own place, and nothing from another world exists in a different world.
 
Every series inside each separate world is standalone, and does not have to be read in any kind of specific order. When you start any series, you should start with book one, and read through to the last book. AGAIN, every series is standalone.
 
Each series or standalone novel in every world is listed in PUBLISHING order.
 
Chronological is not listed because several series within larger worlds happen at the same time at opposite ends of the country. Other books that were published later happened decades before books that published before it. Hence why each series or standalone book was written as standalone.
 
Please do not ask me for chronological order, as I will not provide it.

Realms of Glass and Blood

The Hallans

These Valley Days

The Russian Guns Series
The Darkest Lies Trilogy
The Beast of Moscow Saga

​Filthy Marcellos Series
The Chicago War Series
Donati Bloodlines Trilogy
DeLuca Duet
Inflict (standalone; free)
Guzzi Duet
Cross + Catherine Saga
Effortless (standalone novel)
John + Siena Duet
Captivated (standalone)
Andino + Haven Duet
​Renzo + Lucia Trilogy
Dirty Pool (standalone) 
The ​Guzzi Legacy
Pretty Lies (standalone)
Pink (standalone)
The After Another Trilogy

Seasons of Betrayal Series
Acquainted (written by London Miller)
Dishonored
Fractured Ties (A Boykov Bratva Standalone)
Essence of Fear (A Boykov Bratva Standalone)

Gun Moll Trilogy

Cozen (standalone novel)