This was inspired by the surveys of Magnificate but this is about in which areas should Poland prioritize in getting back in Silesia or how Poland should prioritize in getting back.
I - Silesian Lesser Poland/Silesian Galicia aka Katowice - Oswiecim region
II - Silesian Posen
III - Upper Silesia
IV - Zaolzie
V - Lower Silesia North of Oder
VI - Lower Silesia South of Oder
VII - Opava region
Parts of I and II did return to Poland before the partitions - all of II was returned to Poland and parts of III and V were returned to Poland but those were not integrated to Poland and were given up and majority of I did return to Poland during the Interwar period.
I, II, III, IV and V used to have a large Polish Population before the Reformation - The thing is II and V became almost completely german before World War I.
I and II are the grey areas in the Treaty of Trencin and Namyslow - they are disputedly parts of Silesia, (the area II never belonged to Silesia Culturally but considered as a part of Silesia but rather had strong cultural ties with Posen), the I belonged to the Lesser Poland but given to the Silesian Piasts.