Are you American? If so, you will be subject to income tax no matter where you are in the world or where you make your income. You can get up to $103k USD (double check this) exempted from that though by filing IRS Form 2555. If you are not a US citizen, then enjoy not living under the tyrannical auspices of a shadowy global syndicate that seems to perpetuate itself solely for the purpose of making it as difficult and miserable as possible for its heterosexual male subjects to have healthy families.
With that in mind, identify the countries which have the lowest local tax rates. Don't only look at income tax but also sales taxes, property taxes, and any other taxes which might be relevant to you. Also make sure that "income tax" means the type of income tax which is relevant to you (personal, corporate, self-employment, etc.). Once you have all that sorted, choose which you would most like to actually live in.
Based on my knowledge, what I've heard, and my view of which of the mentioned locations might actually be the most enjoyable but cost effective to live in full time, I would narrow the list to the following:
Kaohsiung
Taichung
Taipei
Gibraltar (Monkeys - You will be arrested if you punch them so don't punch them.)
Tbilisi (One of the best countries for doing business I've heard.)
Kuala Lumpur (You may also want to look into Labuan for tax reasons)
Managua (One of my former colleagues went to Nica and said it was only slightly pricier than the Philippines but not unsafe like Honduras)
Asuncion (Citizenship after 3 years so they say)
Abu Dhabi (Lots of female workers from SEA, especially Filipinas. Many are married, many are likely sex workers, most are not LTR material but can be bangable)
Dubai (Same as Abu Dhabi)
Muscat (Probably the best capital city in the Arab Gulf)
Port Vila (If you like Melanesian girls, betel nut, and French yacht people. My cousin said Vanuatu has the most beautiful beaches he has ever seen.)
*The Caribbean tax haven islands are known to be stupidly expensive sausage fests with high crime rates (Bahamas in particular has a reputation for being a bit ratchet). Those Caribbean islands which are European territories are also known to be expensive as hell and have messed up gender ratios with more men than women and an abnormally high percentage of the men being filthy rich yachters and banksters. A possible exception to this on your list is Saint Kitts and Nevis but, if I remember right, only Nevis has a special tax status and only about 11,000 people live on Nevis so you may get bored there after a while (or you may adapt to village life and learn to love it).
*The Arab countries, with the exception of Dubai, are known to not be very enjoyable places to live and the Arab Gulf has some of the highest obesity rates on Earth, even surpassing the US. - This suggest that their food sucks.
*Hong Kong is insanely expensive and has a high suicide rate for a reason. Macau is also absurdly expensive though perhaps not as much so as Hong Kong. Singapore is just as bonkers as Hong Kong and you would do better to live in Johor Bahru or Batam if you just really want to be near Singapore. Still, you can afford a better urbanite lifestyle and still be surrounded by Chinese people living in Kuala Lumpur or Penang (also Malaysia).
*Luanda is known to be one of the most expensive cities on Earth but you do not get what you pay for.
*A German girl I met in Mexico who was studying in Costa Rica told me that Costa Rica is as expensive as Germany now.
*Honduras is possibly the most murderous country in the world and is simply an unsafe place to live long term.
*The Syrian cities you mentioned are mostly in ruin at the moment.
*Depending on what country you are from, living in Tehran could be difficult. Bear in mind also that they are serious about the religious laws there and take that into account if you decide to take a crack at living there.
*I've heard that Panama is overpriced now like Costa Rica.
*As I understand, Lebanon, while being probably the most interesting Arab country, does in fact have income tax and is, from what I've heard, on the expensive side.
*From what I've heard, the Seychelles are more expensive than Mauritius. If I were going to move to an African island country, I think it would either be Mauritius or Cabo Verde (Sao Tome is nice but would likely get boring).
*I've heard that La Paz and Guatemala City suck and I've also heard that Bolivian and Guatemalan women are the hardest but least rewarding in South and Central America respectively.
What kind of budget are you working with, and is your income dependent on anything like location, internet speed, access to certain websites which might be blocked in some jurisdictions, etc.? What kind of lifestyle are you after (beach bum, hip urban dweller, rural doomsday prepper)?