This list is not being actively maintained. It is unlikely that any effort will be made to add new servants as they arrive in FGO NA.
This is a list of servants in the NA version (not kept up to date, quality not guaranteed) with brief data.
All icons from https://kazemai.github.io/fgo-vz/servant.html.
Extra Traits listed are only those that are impacted by skills/noble phantasms and are not unique to a specific servant. All trait data from FGO Wikia. This data may be incorrect or I may have incorrectly transcribed the data.
Note that the game refers to 'Balanced' - this refers to the Neutral in regards to Good/Evil. Therefore, Nobunaga is considered 'Balanced'.