A secondary variant of Σ exists as the previous (reserved) Unicode codepoint.
Characters (reading order in the preview): ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.,"'?!@_*#$%&()+=/:;<=>[\]^`~ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρςστυφχψω
Glyphs
This font will not be useful to you, I almost certain of that. I created it for my own project.
I was looking for a tiny ~7pts pixelated font that is simple, sans-serif, legible and supports Cyrillic (Russian) letters, as well as a few other select symbols. I failed to find a suitable font neither among the preinstalled, nor online, so made my own.
I know for a fact this font is more compact than Franklin Gothic Medium w/o aliasing at 7px. Looks cleaner, too.
V1.1: Changed "6" a little so it wouldn't like "б", Russian lowercase letter for "B". Also fixed Latin lowercase "h" and "f".
V.1.2: Changed "Ч" and "ч" to be smoother. Were too blocky for whatever I do.