*although there are a couple of Emma and Grumpy's that are male/female alternate versions, and should not be run together, namely Laura Craft/Indiana James, and Beryl/Hurd.
Beryl and Hurd can be used together without problems! I always use them together, and although Hurd has the same features and approx the same dialog as Beryl, he isn't a 'clone' of her.
It's however true that laura and Indiana don't work together - they were the first companions I ever made, and at that time (summer 2002) it wasn't known that one would have to make new dialog lines when adapting a new companion.
http://lovkullen.net/Emma/quests.htm is a questmod but also include a whole range of companions, among them a teenager boy and three berserkers, and of course the main characters Wulfren and Laurenna. In an addon it also adds two fully functioning children companions. http://lovkullen.net/Emma/kids.htm includes five 'companion lite' - i.e. with a slightly simplifyed companion script as they are more supposed to be, well, a family in your house than full-fledged companions.
There are also many http://lovkullen.net/Emma/quests.htm available here - packguars, donkeys, dogs, cats... and of course wolf companion Spot without whome I refuse to start a Morrowind game.
Grumpy made two housemods that also includes companions, Asgard and Dome Home (well, I made the companion and the staff there, on his request), both available http://lovkullen.net/Emma/grumpy.htm
And, when talking of Grumpy's companions, don't forget his Cally and Gabran companions, available http://lovkullen.net/Emma/grumpy.htm
I probably forgot a whole bunch...