Are all constellations outside the Milky Way?

Generally speaking, all the constellations are not outside the Milky Way.

In astronomy, the orbit of the sun around the earth with the earth as the center is called the ecliptic. The width of the ecliptic is 16 degrees, and it is 360 degrees around the earth. The ecliptic plane includes the orbits of all planets except Pluto, including constellations. Every 30 degrees, there is a constellation in each range, with a total of 12 constellations, which is called "Zodiac". In astrology, the zodiac 12 is synonymous with the orientation of the universe, representing the basic personality prototype of 12. When a person is born, the position of the stars falls into the zodiac, which shows a person's innate character and talent. Zodiac 12 symbolizes the psychological level and reflects a person's behavior. So the ecliptic is divided into 12 constellation, which is called 12 constellation. Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces. You got it? I hope it works for you.