Fonts, who uses them, where, and how. Curated by Sam Berlow, Stephen Coles, and Nick Sherman. "We document and examine real-world typography with the goal of improving typographic literacy and appreciation."
Codepoints.net is dedicated to all the characters, that are defined in the Unicode Standard. You can view all the 110181 Unicode codepoints & there's even a search wizard if you can't describe what you're looking for!