I only know the Catalan bean Mongeta de la Neu but I don't have it.
Here are some pictures (the pages are in Catalan - which is different from Spanish).
There are the ones with pure white seeds and green pods and the ones with white and little rose speckled beans with red pods.
Seed bank from Vallès Oriental (white - green):
https://www.llavorsvallesoriental.cat/especies/mongeta-de-la-neu-/
White:
https://associaciolera.org/producte/llavors-de-mongeta-de-la-neu-del-front-mata-alta/
Slow food article (speckled - red):
https://slowfoodcatalunya.cat/mongeta-de-la-neu/?lang=en
Speckled:
https://boletspirineus.com/bp-wp/fesols-o-mongetes/
Both:
https://vadegust.cat/productes/mongeta-neu-mes-blanca-totes-60541/
On the pages it's written that it is called snow bean because it's the most white one they have there in this region.
Maybe
@Artorius knows more as he has this bean?
And I have a new project: getting both variations of this Mongeta de la Neu and compare it
There are other variations of the same bean in Catalonia. For example, the seed bank says that Genoll de Crist, Or i Plata, Calbeta, Sant Íscle o de Monistrol and Del 40 are genetically all the same - the name depends on the valley they come from - even though my Or i Plata and Genoll de Crist looks a bit different (and also in the pictures on the Catalan web pages). It seems that this shows the influence of the local selections and different preferences in different valleys in Catalonia
Thanks for this information. I wasn't aware that there is a Schneebohne in Germany. I only knew the Catalan ones. I should then also add this one to the comparison project of the two one from Catalonia