I don't think Greece's playoff will adjust their ranking for the Nations League - thought I saw somewhere the pots would be decided after the 10 group games.
Going by the site(and taking 1,600 points as a base for a win as it varies, 800 for a draw and 340 for a defeat)it appears that Romania will definitely drop into League C, regardless of other results unless I'm missing something. Turkey will move up by avoiding defeat to Finland but if Hungary defeat the Faroe Islands and Turkey lose to Finland, Hungary will go into League B.
Belarus need to beat France to get into League C ahead of Lithuania.
I think these could be the probable pots based on what I think are realistic events that will occur and unless I'm missing something major.
Romania - guaranteed
Hungary - assuming they defeat Faroe Islands and Turkey don't lose to Finland.
Scotland - guaranteed
Slovenia - Unless Albania beat Italy in their last qualifier.
Norway - guaranteed
Albania - unless they defeat Italy in their last qualifier, rising to Pot 1 with Slovenia dropping down
Greece - Assuming they defeat Gibraltar
Serbia - Unless they lose to Georgia in which case Montenegro will keep their slot
Montenegro - Unless Serbia lose to Georgia
Israel - Unless they beat Spain, Serbia lose to Georgia and Greece lose to Gibraltar in which case they'll go to pot 2
Bulgaria - Guaranteed
Finland - Unless neither Cyprus beat Belgium or Estonia beat Bosnia in which case they will be demoted to pot 4
Cyprus - Guaranteed unless they beat Belgium and Finland don't beat Turkey in which case they will be promoted to pot 3
Estonia - Guaranteed unless they beat Bosnia and Finland don't beat Turkey and Cyprus don't beat Belgium in which case they will be promoted to Pot 3
Lithuania - Guaranteed unless Belarus beat France in which case they will be demoted to pot 4