No, I'm afraid nobody has identified my allamanda yet. It is definitely a bush, rather than a vining, type. I forgot to mention that, being a woody plant, it tends to shed some leaves after being brought indoors. So I usually cut it back in the fall.
Yes, mine is more bushy than vining. Actually a prettier more controlled plant than the one with bigger flowers. And it lived 2 winters for me in the ground in zone 8. Didn't bloom tho. Will see if it returns next year. i always cut my vining allamanders back. It is hard to find a place for a 10 foot tall plant even in the greenhouse. Besides, they root so easily I can make new plants.
Do you have the rose-ish vining allamanda? I call it 'cherry jubilee'