https://blendermarket.com/products/bake-matcher

Bake Matcher is a Blender Add-on that automates the naming of objects to match when setting them up for baking.  It works by renaming low/high-poly objects into a standardized naming format and then automatically finds their corresponding bake objects in 3D space and renames them to match.  Keeping objects separated is important for preserving object data and modifiers, as well as baking by mesh name in texturing programs such as Substance Painter where each object is baked separately so that no bleed-over occurs.