It's entirely possible that some as yet unpredicted particle (possibly a tetraquark or pentequark) might be both the missing dark matter and also the moderator of gravity... and result in a unified EWG theory... along with some as yet unnoticed field.
https://www.sciencealert.com/physic...-tetraquarks-exist-after-all-quarks-particles
https://www.sciencealert.com/physic...-tetraquarks-exist-after-all-quarks-particles