From what I've heard at this moment: Russia, Estonia, Denmark, Cambodia, China, Iran, Canada, Liberland (sic!) and many others have expressed an interest in creating their own cryptocurrencies.
Venezuela's Petro - it's no surprise that they released they own crypto so soon - they have nothing to lose as the with the highest inflation in the world.
Their coin, however, is nothing more than the attempt of avoiding financial and international sanctions imposed on Venezuela by USA and EU.