Need advice on antique lamp shades

I have two antique chandeliers that probably date back to the early 1900s. The original shades are missing from one of my chandeliers. A tenant bought some shades for it, but they aren't a good fit. Can someone make a recommendation? I'm having trouble figuring out what the style should be. The original shades on the second intact chandelier shown are opal glass bell shaped, almost 8" in diameter, which is a size really hard to find. Should I look for something similar for the other chandelier? The only thing I can find that wide in opal glass is sheffield style, which is probably not the best. I don't even know what style the chandelier is. Would love to hear from someone knowledgeable on this subject.