It looks like Agave sisalana.

It is not Agave sisalana where the leaf margin is not spiny.

This may be A. americana or A. salmiana where the leaf margin is spiny.

this may be Agave salmiana var. ferox. A americana have ash colour coating on the leaves

Looks like Agave americana for his terminal spine decurrent. and not abrupt, truncate.

Best regards.

It's a young Furcraea, perhaps selloa, I think.

I see longitudinally ondulating leaf surfaces, and the upper half of the leaf is broader than the lower half. I can also suppose that leaves are relatively flexible.

Cheers

Please check this useful link.

https://www.seedman.com/succulent.htm

Good link, so you notice it's a Furcraea.