Falconian Productions' new pathfinder 1e class, The Necrogenesist, is now out, available at DrivethruRPG! The necrogenesist takes a different approach, compared to most necromancers. While many rely on spells and other magics to animate their creations in a comparatively simple manner, necrogenesists study the state of undeath on a fundamental level, learning to take hold of raw negative energy and build upon it. While they lack the true breadth of capability that most spellcasters have, their creations, by comparison, are forces to be reckoned with.
It also contains a full section for compatibility with Spheres of Power/Might by Drop Dead Studios, including several archetypes and other character options. Once Ultimate Engineering is out, it'll also get a free update with another archetype that utilizes it.
DrivethruRPG link, again.