I also prefer remote (and have been remote probably 75% of my career). I’m also ADHD, and while I’d never even heard of ”body doubling” by name it’s something I’ve found helpful sometimes, under some circumstances.
For the minority of my career spent in office, it’s ranged from wildly productive (great team fit, good balance in favor of focus time) to hilariously counterproductive (excessive meetings and process ceremony, continuous interruptions whether ostensibly work-related or social, unbearably noisy).
For the times I’ve worked on mixed remote/office, I’ve generally felt my own and my teams’ productivity is great except when leadership found the arrangement objectionable (self-fulfilling prophecy I guess), or when team communications became challenging at scale (eg we found it hard to do “standups” with ~15 people in office and ~10 people on a screen; but realistically we shouldn’t have had that many people in any meetings).