need help identifying this plant saved from dumpster

hello all
need a little help i found this plant in the dumpster behind my shop its doing a lot better than it was when i found it . I got a new pot for it the other was broke i guess that is why they trashed it i've attached a picture to see if any one knows . Two of them are about three feet tall the pic is of the two smaller ones about a foot tall the leaves on these were in better shape if you need another pic let me know.I would like to know what i have so i can nurse it back to health properly.

Thanks
russell G

 

Might it be Dracaena marginata 'Tricolor'?

 

Thank You Junglekeeper ....thats my plant went to web got all the info i need to nurse it back to health.

Thanks a Bunch
Russellg