What are some common seeded varieties of grapes?

Common seeded varieties include the following:

• Emperor grapes were once a major variety, representing  25% of California's table production, but now they  account for less than 5 percent. Bunched in reddish to purplish clusters, Emperor grapes have a mild, somewhat cherry-like flavor and a lower sugar content relative to  other varieties. Their thick skins make them a durable grape for shipping and consumer handling. Their large size and full, round shape make Emperors popular choice for holiday tables.

• The Red Globe is a very large grape with a crisp texture, large seeds, and good flavor.

• The Calmeria is a pale green, oval grape. It provides a mildly sweet flavor and contains a few small seeds. An elongated shape is the reason for its nickname, the Ladyfinger grape.
• Ribier is a large, blue-black grape that grows in generous bunches. It has tender, slightly bitter skin and a sweeter flavor than the Exotic.

• Exotic is a blue-black grape with firm flesh and a close resemblance to the Ribier.

• Italia (or Italia Muscat) grapes are primarily used for winemaking. The Italia's flavor is milder than the original Muscat but the wine-like sweetness still exists and so does the wonderful fruit fragrance.

• Christmas Rose is a newer variety, a cross of four older varieties. It has large, bright red berries and tart-sweet flavor.

• Native American grapes are sometimes referred to as slip-skin grapes because their skins easily separate from the flesh. Another common characteristic is that their seeds remain tightly embedded in the flesh. 

Source(s):
Whole Foods "Guide to Fruits"
Tonytantillo.com "Fruits: Grapes"