As far as compact spare tires are concerned, I have only been able to find two options
Continental CST 17 - Size 125/70/19
https://www.tirerack.com/tires/tires...omCompare1=yes
Kuhmo T131 - Size 135/70/19
https://www.tirerack.com/tires/tires...R9KH&tab=Specs