If it’s make sense for you, is it possible to define Old Turkic characters under it’s own category? With or without nice names… They are curently listed under “Other” category — not like (e.g.) Old Hungarian of it’s own.
If you do prefer to realize that, please find their Unicode chart and a list attached for your convenience.
U10C00.pdf (85.2 KB)
old-turkic-unicodes.txt.zip (748 Bytes)