def get_count_matrix(my_key):
   return len([element for element in my_key if element in custom_list])

my_list = [[31, 5, 22, 7], [85, 5], [9, 11, 22], [7, 48]]

print("列表是：")
print(my_list)

custom_list = [31, 85, 7]

my_list.sort(key=get_count_matrix)

print("结果列表是：")
print(my_list)

列表是：
[[31, 5, 22, 7], [85, 5], [9, 11, 22], [7, 48]]
结果列表是：
[[9, 11, 22], [85, 5], [7, 48], [31, 5, 22, 7]]