Got four yucca cuttings from a coworker but I've never seen Yucca cuttings without a solid trunk, will they root?

Yucca roots like crazy, just place in soil and occasionally water and you should be fine.

I don't think you could kill a yukka if you tried. Currently trying to kill some, is more difficult than you'd think.

Looks like there are nodes and already one little root forming. It'll be fine!

Is that not a solid trunk in the center? The brown spots are dormant buds do like others are saying, you should be fine