There are two ways of bringing up the list of crafts:
1 - Press "i" as the shortcut to the interception window
2 - Click on the "intercept" button in the UFO's screen, it brings up a list of available interceptors.
I think they are sorted by.. craft ID number? which is the order in which you bought/made them? Not 100% sure anymore, I haven't played in a while..
When using the 2nd way to get the craft list (ie from a UFO) it could be nice to order the crafts by proximity to the UFO which is being intercepted, instead of whatever the default is.
I remember reordering my crafts so they were by base, so I always knew which I wanted to send (specific bases have specific crews, crafts and roles for me), but if you have all your bases as equivalent, then it'd make sense.