The smaller one is a typical wild greylag Goose.
The bigger one is a quite fat farmyard Goose (maybe feral), which has Greylag for ancestor.
In a number of european countries (UK for example), hybridization between feral farmyard Geese and Greylag are frequent, as hybridization between Canada Geese and farmyard (or Greylag) goose...
And about legs, they are always pink (more or less light, according to the individuals and the subspecies: A.a.anser or A.a. rubrirostris).
If you see a Greylag with orange legs, you can be sure that this bird have some domestic genes or of another species (for example: hybrid Greylag X Great-White-Fronted or Greylag X Bean)
Best regards...