Trying to focus on a small pool of heroes for p1/p3. Are these pools well rounded enough?

Still relatively new to the game and want to try narrowing down my pool of heroes so I can focus. I've picked my favorite characters but want to make sure I have a somewhat well rounded list so I have good options. I only play ranked all pick, so I don't typically get the option to counter pick (other than the supports) but I can at least adjust around what my friends are picking. My heroes:

P1:

Spectre

Phantom Lancer (PL)

Wraith King (WK)

Drow

Juggernaut

P3:

Necrophos

Bristleback (BB)

Underlord

Legion Commander

Centaur Warrunner

Trying to keep my pool small so I obviously can't cover everything but is there anything i'm completely missing that I should fill out? Only ones from the list I absolutely don't want to remove are PL, Necro and BB since they're my favorite. Everyone else I enjoy but wouldn't mind swapping.