The biggest greenhouse gas, by orders-of-magnitude, is water vapor...not the condensed vapor we see as clouds but the vaporized water that we experience as humidity and which your list does not even include.
Except warmer air holds more humidity. Increasing average temperature slightly with CO2 then increases humidity, which amplifies the warming effect and this is one of the lines of reasoning that leads to run away effects and tipping points. The entire 'water vapor' fact argues very strongly in favor of limiting global warming, the anti-global warming crowd is just so willfully ignorant of the subject that they think this argues in their favor.
To help you out some, you can safely ignore anyone claiming AGW doesn't exist or is doubtful. It's been over 15 since there's been what a lay person would call 'reasonable doubt' about that. There is, however, very large uncertainties about just how large an effect humans are having and, therefore, just how effective global warming reduction methods would be. Anyone legitimate on the 'anti-global warming' side is making these types of very real arguments, not obvious nonsense like 'CO2 promotes plant growth' which would stop atmospheric CO2 from rising so cannot be happening.
However, what to do about about global warming is at least as much an economic question (probably much more so) as a climate science question. So far, on the whole, it appears that money spent reducing global warming is among the least cost-effective environmental spending there is.