Use wildcards for feature classes?

Be careful when using just the glyph names to create classes. For example, all glyphs starting with “E” also includes “Eng” (Ŋ) and “Eth” (Ð). Similarly, “Germandbls” (ẞ) starts with a “G” but is not related to G. There are many other such issues, especially if your font includes multiple scripts.

I would assign a tag to the glyphs you want in a group and then use predicates to collect all glyphs with the same tag into a class: @SomeClass = [$["some-tag" in tags]];

I can recommend my Guten Tag plugin for quickly assigning tags to glyphs:

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