Veteran seiyuu 沢城みゆき / Miyuki Sawashiro has a plethora of roles to her credit, displaying enormous variety and great versatility (her Sankaku synopsis would likely centre on her recent roles of Kannagi’s Tsugumi and Perrine of Strike Witches).
Thus, a fan has compiled this rather extensive compilation of her performances:
Details for each title featured are included (in Japanese). Feel free to ask after any.
She is not an idol type seiyuu for whatever reasons.
She certainly seems to be able to manage performances unrecognisable from role to role, something not all seiyuu are capable of.