It looks like a yucca. Here is a link that might be useful: yucca

Carica papaya

Your plant, one of my favorites) is Bush Ivy (Fatshedera lizei). It is important to understand how it grows to use it correctly. Unlike other ivies, it does not have little roots that cling. It must be supported (espalied) on a wall, fence or pergola. As it matures in your zone it will send out branches that could be 12' long and it becomes very heavy so needs a strong support. It can be pruned back and controlled any time of the year. I have grown it on a fence using tiers of grape wire supended through screw eyes and the branches afixed to the wire with single wrap velcro. Also, the entrance to my garden in a former home was a strong arch with Bush Ivy secured to it. In the late winter you will note quite a bit of yellowing and dropping leaves. Normal situation not to worry about. Hopefully you can find a growing situation for this plant. It is a beauty.

Unfortunately I didn't the option to add any photos to my original post. It (the option add photos) only showed up now in my reply.