Beginner Gardening: Majestic, maternal mystery plant. Can you ID?, 1 by Nethermeade

Nethermeade wrote:
I acquired this plant two years ago when I interned at a legal non-profit. The story was that a secretary brought in a plant decades before that self-propogates from seeds that fall from brown seed pods. The offspring of that plant are now scattered all over the office, making babies of their own. The rooted pieces I brought home in a jelly jar have grown into a sizeable plant. She has spear shaped leaves that grow along vining stems in wacky pineapple formations. Tiny white flowers dry leaving brown seed pods that fall into the pot and sprout. Leaf tops are green, undersides are a lovely purple. Lower leaves yellow and die over time. Any thoughts?