This group of MEPs will work to ensure that, being stateless nations and with territorial conflicts, "the right of the peoples of these communities to free and democratically self-determination is recognized in the legally recognized terms". Eight Members from Corsica, Flanders, Ireland, Catalonia and the Basque Country have made the news known. As you have pointed out, the group is open to anyone who wants to work for this right. At the moment it is Pernando Barrena (EH Bildu), Izaskun Bilbao (PNV), François Alfonsi (Regions et Peuples Solidaires), Geert Bourgeois (N-VA), Chris MacManus (Sinn Fein), Toni Comin, Clara Poni.
The signatories stress that in recent years "several European national communities have had similar challenges". They therefore consider that "there is an opportunity for several European nations with territorial debates and stateless nations to cooperate within the European institutions, to promote common approaches, to agree on shared positions and to defend the need for a 'Law of Clarity' at European level as a tool for resolving democratic debates on self-determination within the European Union".