Theres a mod called AuraMap that puts rings on your minimap for 40 yard and a second thats adjustable from 5 (i think) to 50 yards maybe. but when you are out in the world, it changes any party members into their class icons on your minimap, if they are within the MM frame.
but past that, Cartographer is a good mod. colors party members and guildmates (if your guildys have cartographer) by class color, and with dissimilar icons. so you can tell guild from party.