The first two pics are of suits or shirts? In any case, all the ties and PSs posted are very nice and would go well with what you have. Good choices. If you don't have it already though, add in a white linen PS.
Sorry, yes the first two are of suits. Definitely getting a white PS (likely Kent Wang). My biggest trouble is adding in the pocket square (other than white), so as to not become too matchy, too many colours, too many dots, etc.
Also, are there any online places that have good brownish/light brown pocket squares? I tried many different sites, and I could never find any that seemed to peak my interest.