Breber said "watch the root system on poplars you will be sorry (the tower poplars are pretty and fast growing and tall and slim (look very nice) but the root system will wish you hadn't planted them in the first place. Stay clear of the cottomwood tree as well. Maybe a maple (depends on the space you are talking about like the others said). Otherwise not sure "
I'd forgotten the name of the ones we planted, but your post jogged my memory, they were the towering poplers you mention.
They grew extremely fast once I stopped watering them with city water and created a rain water collection system.
They made for a beautiful privacy and shade wall, but shed a boatload of leaves every year and once they were cut down and the stumps shredded the roots were a bloody nightmare of little suckers popping up everywhere in my yard for about 2 years.
Roundup barely browned the shoots, i ended up digging up every spot they poked thru and removed the roots, my yard is still a maze of shallow grooves.
I ripped out roots that were barely the thickness of a shoestring and had a solid 12" of shoots coming off them popping up everywhere, definitely google poplar sucker roots before planting them.