Thank you all.
We checked Yucca Gigantea and Cordyline australis on google images, but they look a bit different.
I think I have some Yucca Gigantea in pots and other locations (so many plants!!)
But the big ones in my 2nd photo that I have everywhere are a bit different, they have a dark edge on their leaves and several branches. The branches are very flexible by the way, I'm sure they will break if I push them down.
I lifted some 4 year old laminated flooring in the basement today, and guess what, thin roots under the laminated! These plants are super invasive. I just need to know which ones to take out. I read that some palm trees have horizontal roots like that, that extend 20 meters horizontally, but are weak and don't damage buildings, but can go into plumbing. New country, new problems 😀