[Answer]-Multiple relations of the same instance – Django

You can use ManyToMany field instead of a ForeignKey.

class Model(models.Model):
    name = models.CharField(max_length=254)
    lists = models.ManyToManyField(ListModel, related_name="models")

This way a Model can relate to multiple ModelLists and a ModelList can be related to multiple Models.

model1.lists
model_list1.models