You will be hard pressed to find elongated bowls less then 28" long.
The Aquia is 27-1/4" long.
With any bowl, you have to add the space behind.
The Aquia adds 1/2 behind the tank
The Ultramax adds 3/4"
The Drake adds 1-1/8"
I can list other brands too, but then then none are shorter, and the quality starts to slip.
Cadet Space Saver Elongated, 27-5/8, add 5/8"
Toto Drake elongated CST744