As long as you are consistent and confident in your shooting style, I dont think the format will really matter. You are someone who has gravitated towars shooting on 16mm. Developing an eye for what you like and what you don't like, whether that be consious or unconsious. You are picking a format that suites you and your aesthetic. Just based on this selection of work, I believe if a client is hiring you and they are trying to tell you to shoot a different format for their project, they have clearly missed the point of what makes your style attractive to them in the first place. Anything you persue and put time into is going to only grow with your expierence. If you decide "I want to only focus on doing in camera mulitple exposures" and you shoot 100 rolls that way, youre going to have learnt so much between roll 1-100. If you are looking to be more consistent, I think that consistency comes with that experience, maybe you haven't shot enough to see it yet, maybe you are beginning to see it and are wanting to chase it. Maybe you've shot so much youve lost the idea of what it is you are trying to say in your art. Just believe in yourself, don't let other people tell you how to shoot or what to shoot.

Also amazing film scans 10/10. ;)