There's also what the Americans call a 'teardrop trailer.' I've never used one, but they seem kinda cute.
Caravan manufacturers have started making them. Some are rather amazing in the amount of indoor space. Very TARDIS like.
GOPOD were the first I saw in the UK but they are still Caravans, and Caravans are different to Motorhome/Campervans.
There's just something special about actually driving your home around, with everything on-board and accessible.
I've never had a Caravan but I've had a bloody big Folding Camper like this
We had a wonderful time in it but they need setting up, they need to be totally dried if you intend to store them for more than a couple of days, they can be very cold and very hot and they take up as much room as a car.
I think the big advantage of getting a Transit Van type base vehicle is that you then own a Transit Van. Surely the most fabulous thing to own. It's basically a bike shed on your drive.