I am looking for more information on the Savoraim such as a list of who they were, what they wrote outside of comments/amendments in the talmud, meaning do they have responsa, ethical or halachik works?
Any works that deal in detail with the development of the Talmud (e.g. Seder HaKabalah of the Raavad, the Igeres R' Sherira Gaon) will discuss the Savoraim. The Doros HaRishonim discusses them at some length in volume six.
The Savoraim was a very brief and obscure period. Different sources give significantly different information on the period. The Seder HaKabalah of the Raavad writes that the period lasted five generations (over a period of 187 years) and he identifies the following figures as the leaders of each generation:
However, as mentioned above, other sources differ with this account in a variety of ways.
To my knowledge, other than their role in the final compilation and editing of the Talmud, there are no distinct works attributed to Sages from this brief period.
From Rabbi Yosef Eisen's Miraculous Journey (pg 12)
(he cites Paretsky, Reservoirs of Faith p. 99 and HaLevi, Doros HaRishonim Vol. 6, p.21)