Filemaker 16.0.6 and Monterey are ok?

According to their website, FileMaker Pro 16 hasn't been supported since macOS X High Sierra. Beyond that, they make no guarantees for compatibility.

The latest version is FileMaker Pro 19.5.1, which officially supports macOS Monterey.

FileMaker Pro System Requirements and Compatibility

Hope this helps!

https://community.claris.com/en/s/article/System-Requirements-for-FileMaker-Pro-16-and-FileMaker-Pro-16-Advanced-1503693098847