MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
The Baltic character sets cover Estonian, Latvian, and Lithuanian languages.
cp1257
(Windows Baltic) collations:
cp1257_bin
cp1257_general_ci
(default)
cp1257_lithuanian_ci
latin7
(ISO 8859-13 Baltic) collations:
latin7_bin
latin7_estonian_cs
latin7_general_ci
(default)
latin7_general_cs