What type of clouds are low-lying, thick, cover the sky, and typically bring continuous precipitation?

Stratus clouds are indeed the type of clouds described in the question. These clouds are characterized by their low altitude and often form a thick, uniform layer that blankets the sky. Their dense structure means they can cover large areas, leading to overcast conditions. Stratus clouds are typically associated with steady, continuous precipitation, which can manifest as light rain or drizzle. This makes them distinct from other types of clouds, which may have different formations and precipitation characteristics.

Cumulus clouds, for example, are often fluffy and have a puffy appearance, suggesting fair weather rather than continuous precipitation. Cumulonimbus clouds, while capable of producing heavy rain and thunderstorms, are generally tall and towering, presenting a different profile compared to the flat nature of stratus clouds. Cirrus clouds, on the other hand, are high-altitude and wispy in appearance, and they usually signal a change in weather rather than bring precipitation in themselves. Thus, the characteristics of stratus clouds directly fit the description provided in the question.