You do value some citizenships more than others though, right? Or would you trade yours for any other? If not, I don't think it makes you a "nationalist", but n

You do value some citizenships more than others though, right? Or would you trade yours for any other? If not, I don't think it makes you a "nationalist", but neither would opposition to free movement from places you don't want to live at into where you do. It does not follow from not valuing some people more than others that free movement would benefit any of these people; IMO part of a "moral" position involves trying to guess the likely consequences of things in the real world. An argument that people from different cultures don't get along very well, particularly when there's a large and sudden change in the numbers of one of the groups, is not antithetical to your position of valuing people equally; the only point of disagreement is wrt likely outcomes.