Which accented characters are considered the same? In MySQL, certain characters are considered the same when performing searches, e.g. 'n' and 'ñ'; unless you specify BINARY in the condition.

Is there a list somewhere of the characters that are considered the same?
Case or accent sensitivity behavior is defined by the collation you are using.

The full list of comparable characters in a given collation can be found in collationcharts where you find the MySQL list of collations

If you find your collation in that list you will see a chart of comparable characters.