HMS Weight Comparison Doc
This page features a spreadsheet that outlines some of the more pertinent weight differences among similar parts: BP Types, Shared AR Metal Frames, Weight Disk Types, Plastic CWD Rings and RC Molds. While technically no sheet can be perfectly accurate or complete, as it would take a sample size much larger than one single person would have, this gives you a general idea of weight differences among similar parts. This is also a more honest approach than listing out singular weights for every part - they all vary minutely, which is why you'll notice in none of the specific Beyblade articles are exact weights given.
If you'd like to know a specific weight of an individual part, as many aren't listed here, consider using the WBO Discord or messaging me directly.