You have several choices among different kinds of vehicles, but they can be roughly categorized as big, bigger and bigger still.
Among your choices are larger crossover SUVs such as the Chevrolet Traverse (and the similar Buick Enclave), the GMC Acadia and the Honda Pilot. The Honda Odyssey and Toyota Sienna minivans also seat up to eight.
Moving up the size chart, full-size, truck-based SUVs such as the Chevrolet Tahoe and Suburban (and the similar Cadillac Escalade and GMC Yukon), the Ford Expedition (and related Lincoln Navigator), the Nissan Armada and the Toyota Sequoia seat eight. In the land of giants, you'll find full-size passenger vans such as the Chevrolet Express/GMC Savana, the Ford E-Series wagon, the Mercedes-Benz Sprinter and the Nissan NV 3500.