Don't certain characters like The Puppet and Afton have immensely powerful souls and Remnant? We probably shouldn't scale the likes of the OG animatronics to them, although upscaling them from the OGs should work fine.
If my knowledge of Remnant is complete (which it def isn't, but I still think I'm right about the general order of things), then:
Low-level Remnant users: Toys, Mike, Funtimes, Bare Endo (Characters who have Remnant but haven't really shown to be too powerful with it)
Mid-level Remnant users: Freddy, Bonnie, Chica, Foxy, Stitchwraith (Characters who show relatively impressive feats of Remnant power)
High-level Remnant users: Afton, The Puppet, Golden Freddy, The One You Should Not Have Killed, Eleanor (Characters who are specifically shown to have an immense amount of control over and power from Remnant)
Maybe it would be better to split the abilities into sub-categories for the levels, so, something like:
Low-level Remnant usage grants: Immortality (Types 1, 2, 6, and 7. Remnant is repeatedly stated and shown to grant eternal life. After being infused with Remnant, Michael Afton survived as a decomposing corpse even with his skeleton and most of his internal organs missing. The Funtimes were able to survive as just their wiring.), Accelerated Development (Leveling; physical statistics. Being fed Remnant can increase their attacking and salvaging capabilities.), Limited Possession (Can possess technology or even corpses.), etc.
Mid-level Remnant usage grants: All low-level abilities, Immortality (Type 8 and superior type 2. Reliant on not being put to rest. Are unaffected by the destruction of their physical vessels and can simply exist as ghosts.), Illusion Creation (Can cause mirages of themselves to affect cameras and people. The Crying Children created the missing children poster, crying child poster, and "IT'S ME" hallucinations from FNAF 1.), Technology Manipulation (Can distort and disable cameras, lights, doors, and tasers.), Incorporeality and Intangibility (For their souls.), etc.
High-level Remnant usage grants: All mid-level abilities to a vastly greater extent, Immortality (Types 6 and limited 5. The One You Should Not Have Killed latched on to Afton's soul, preventing either of them from reaching the afterlife.), Status Effect Inducement, Superior Perception Manipulation, and Superior Technology Manipulation (Afton manifested the Phantom animatronics, which can physically cause lack of breath, fading vision, and could affect the actual ventilation of Fazbear's Frights. Afton manifested Shadow Freddy even before being springlocked.), Life Manipulation and Soul Manipulation (The Puppet gave life to the original animatronics and the Toy animatronics, binding the dead children's souls to the robots. Shadow Bonnie reached out to the souls of the Missing Children and put them to rest.), Subjective Reality (Can manifest souls as physical planes of existence, as Shadow Bonnie aided the FNAF 3 protagonist in putting the souls of the missing children to rest and The One You Should Not Have Killed created a realm to endlessly kill and resurrect Afton within, with Nightmare Fredbear stating that he is "very real" and that "there is more than an illusion to fear".), Life Manipulation, Mental Manipulation, Telepathy, Body Puppetry, and Pain Manipulation (When latching onto the souls of others.), Teleportation and Flight (Golden Freddy can teleport, Shadow Bonnie can fly, and The Puppet can do both.), Resistance To Fire Manipulation (Despite Remnant being purged from souls with exposure to immense heat, both Afton and The One You Should Not Have Killed's souls survived the FNAF 6 fire, with Afton's surviving the FNAF 3 fire as well.), etc.