Trying to create a Progress pie chart as a relation | What's the approach?

An alternative method is adding all the pictures (renaming image with % as their names) into Anytype, then create an object-supported relation, limit the object type to image, then you should be able to search for these image more easily.

  • It would display the file name as well, but if the column width in a set/collection is just fit, you should be able to display the picture only.

If advance filter is implemented to object-supported relation, it would be even quicker to reach for the options you need, by further limiting the available options to files with % names only.

Regardless, SVG supports should serve you well.