YES! This point cannot be overstressed. This
LIST WAS NAMED NOT BY TRUMP BUT BY FEDERAL ACTIONS THAT OCCURRED DURING THE OBAMA years. Only Syria was specifically named. The countries were indicated because they were the ones enumerated in prior actions from 2015 and 2016. Their names
weren't mentioned in the text of Trump's order. His order merely contained a reference to the relevant sections of the prior action.
Decent blog post I found here when Googling for the truth about Trump and his Middle Eastern business interests.
https://sethfrantzman.com/2017/01/28/obamas-administration-made-the-muslim-ban-possible-and-the-media-wont-tell-you/