New technology drove innovation in Victorian architecture but design harked back to a period of nostalgia. Past eras were raided from inspiration. Regency classicism, the Greek revival, mix in a bit of Gothic and you had a continuous raid of the past styling.
If you are looking for a mould that offers real gravitas then look no further than the Gainsborough. It fits well on double doors of in entertain rooms or staircases and entrance halls.
An outer teardrop blends perfectly into two elongated sections narrowing to the inside of the door and finishing with a bulbous narrow section.