There's so many that I think are flawless! Let's see...
MH:
Ghouls Rule Abbey
13 Wishes Clawdeen
BYBY Cleo
Sweet 1600 Frankie (possibly my absolute favorite MH doll)
Ghouls Rule Frankie
Freaky Fusion Recharge Chamber Frankie (this doll is just amazing)
Skull Shores Frankie (B&W and color version. I normally don't like short hair on dolls, but Frankie looks amazing!)
Picture Day Lagoona (I bought her just to get free shipping on my Toys R Us order, but holy cow she's amazing! I was surprised I loved everything about her!)
WTMH Dance the Fright Away Lagoona (my very favorite Lagoona, I love her new face)
Dot Dead Gorgeous Operetta
Haunted Rochelle
Love in Scaris Rochelle
Freaky Field Trip Toralei (I know she's simple, but I adore everything about her! I especially love the teal streak in her hair)
WTMH Photo Booth Draculara (I think I love her so much because the heart over her eye reminds me of EAH Lizzie Hearts

)
Ghouls Beast Pet Draculaura (love the blue heart on her cheek)
ALMOST flawless:
Fierce Rockers Catty (wish her shoes were pink)
Scarily Ever After Clawdeen (I don't care for her shoes, but everything else about her is perfect!)
Picture Day Cleo (I wish the color of her shoes were a bit darker blue)
Sweet 1600 Draculaura (wish she had straight bangs instead of triangular)
Sig Nefera (don't like her headpiece)
BYBY Nefera (don't like her gold breastplate thingy)
Thankfully I can take those accessories off of Nefera so then she's perfect

EAH:
Sig Apple
Sig Ashlynn
Sig Maddie
Legacy Day Apple
Legacy Day Cerise
Thronecoming Cupid
The whole Hat Tastic line. They're all amazing!
Fairest on Ice Ashlynn
Fairest on Ice Duchess
Just Sweet Blondie (my favorite EAH doll!)
Dragon Games Darling
Dragon Games Raven (I originally didn't want her, but my sister bought her for me and I fell in love with her. This doll is seriously flawless, I love everything about her and I'm not even a huge Raven fan!)
ALMOST Flawless:
Sig Darling (would have liked her headpiece painted)
Thronecoming Blondie (would prefer her hair down instead of two buns. If I ever debox mine then she'll be getting a trip to the salon

)
Through the Woods Ashlynn (wish her dress had a seam)
Birthday Ball Duchess and Blondie (painted accessories would have made them perfect!)