Imposter syndrome  i assume thats doubting ones ability (usually) in the work environment ?
Surely as part of a team, some of whom are doing the same job, there will inevitably be variation in skill.  Those with less skill i suppose might feel they're experiencing 'imposter syndrome' ....but from my experience as a maintenance tech with the LEAST qualifications among colleagues with very extensive and serious quals, I certainly didn't feel inadequate.  I had a wealth of specific experience that required far more qualified people to come to me for advice.  At the other end, they were capable of far far wider ranging tasks than I ever could.
So was i inadequate ?, an imposter ?  No, I simply recognised my skills etc, my limitations...but also my strengths.
Surely feeling imposter syndrome is a state of mind, 
Far better to acknowledge your weaknesses and strengths, don't be afraid to admit your weaknesses, no one ever criticised me for things I couldn't do, rather happily used my experience and took advice for the stuff I did know.  I know I was never ever afraid to ask for help or advice.
If you work in a good team that work together, no need for anyone to feel it IME.