Linotype Gaius family (Linotype library) contains 8 fonts.
Linotype Gaius Pro Regular
Linotype Gaius Pro Bold
Linotype Gaius Regular
Linotype Gaius Regular Straight
Gaius Ligatures
Linotype Gaius Bold
Linotype Gaius Bold Straight
Gaius Bold Swash Beginning
Font collection on Fonts-online.com Alphabet font list