If you are likely to share your files with other organizations that use different operating systems, you need to research what works best on all the main options - i.e. Windows, MacOS, and the various flavors of Unix. The "If it works on Windows 10, that's OK because it's the only system we use" is probably digging a hole to fall into in future!
Spaces in file names generally cause pointless aggravation, when a system takes only the first "word" of the name as the complete name, and first complains that the file doesn't exist, and then complains that it can't understand what follows it. You can work round that by putting the whole name in quotes, but why make people do that? If you don't like ReleasedDrawings, use Released-Drawings or Released_Drawings instead.
There are other invalid characters - the most obvious being / which is the separator between parts of the file name (e.g. folders and directories) and the equivalent \ on Windows. Others are quote marks, ">", "<", "?", "*", etc. These characters have special meanings on command-line instructions in most operating systems.
Some operating systems have case sensitive file names (ReleasedDrawings and Releaseddrawings are different files!) but others do not. Windows is a compromise.
Some systems have "reserved" file names - for example COM and NUL on Windows.
There may be a limit to the total length of a file name (including all the folder names that precede it).
A Microsoft reference (obviously Windows-specific) is https://support.office.com/en-us/article/Invalid-file-names-and-file-types-in-OneDrive-OneDrive-for-Business-and-SharePoint-64883a5d-228e-48f5-b3d2-eb39e07630fa
You could do worse than stick with the POSIX specification for "fully portable filenames" which permits only characters A-Z, a-z, 0-9, "_", "-", and "." ("-" must not be the first character of the name) and a maximum length of 14 characters, or ISO 9660 (used on CDs and similar devices) which is case-insensitive and only allows A-Z, 0-9, "_", and "." with a maximum length of about 180 characters.