EnTT is the one I was thinking of -- I'd highly recommend looking into its implementation, as it's both very well-documented and readable, and blazing fast. Th

EnTT is the one I was thinking of -- I'd highly recommend looking into its implementation, as it's both very well-documented and readable, and blazing fast. The fact that even this caliber of implementation has to handle multi-component cases by doing super careful curation of components is what makes me skeptical that CGS would be able to solve this situation more efficiently/easily. I would be very happy to be proven wrong here, though.