Underground Mc's Vs. Mainstream Mc's?

I dont know if I consider some of them rappers exactly mainstream but:

1. Andre 3000

2. Easily Nas

3. Ghostface Killah

4. Method Man

5. Easily Black Thought

6. Mos Def

7. Close but Id say Common

8. Biggie

9. Jay Z

10. Raekwon

BQ1: Mainstream easily.

BQ2:

Mainstream:

1. Nas

2. 2Pac

3. Biggie

4. Jay Z

5. Ghostface Killah (not quite sure if Id call him Mainstream)

6. Raekwon (same as Ghostface)

7. Andre 3000

8. Black Thought (same as Rae and Ghostface)

9. Mos Def (same as the others)

10. Lupe Fiasco

Underground:

1. AZ

2. Big L

3. Vinnie Paz

4. Immortal Technique

5. K Rino

6. MF DOOM

7. Pharoah Monch

8. RA The Rugged Man

9. Elzhi

10. Diabolic

1. Mainstream gets a clean sweep except for I think its a tie between Raekwon and Slug.

2. Mainstream

# Nas

# Emimem

# Ghostface Killah

# 2Pac

# Jay Z

# Black Thought (I agree The Roots aren't underground anymore)

# Common

# LL Cool J

# Ice Cube

# Andre 3000

Underground

# Slug

# Pahroahe Monch

# Masta Ace

# Gift of Gab

# Del tha Funky Homosapien

# Aceyalone

# Busdriver

# Blu

# Aesop Rock

# Buckshot

They're my top 10 but in the order.