It all depends on the mass of the material involved. Very massive protostars that are destined to become the hot, luminous 'O and B' stars, are rare and account for less than 1 percent of all stars that are ever formed. These are the 'blue' and 'blue-white' stars that you are probably talking about like Rigel in the constellation Orion. The most common stars that are formed have masses even smaller than the Sun...say 0.5 to 0.1 times the mass of our Sun. But for this question, the answer is that 'yellow' Sun-like stars are far more common than the 'blue' very luminous and massive stars in the Milk Way galaxy.