There are lots, but they get sorted into 2 categories, volcanic and plutonic. Volcanic are rocks that cooled on/near the surface (quickly), and plutons are rocks that cooled deep below the surface (slowly).
intrusive
The two types of igneous rock are are intrusive and extrusive, depending on where they form. Intrusive igneous rock forms underground from slow cooling magma. Extrusive igneous rock forms at or near the surface from quick cooling lava.
It is an example of extrusive igneous rock.
Igneous rock is one of the three main rock types based on the method of its formation. It is also referred to as plutonic or volcanic rock depending on where it formed. In a nutshell, to be classified as igneous, a rock must have crystallized and solidified from molten rock (magma) either below ground (intrusive igneous rock) or at or near the surface (extrusive igneous rock).
The type of igneous rock that hardens under the earths surface is called the Intrusive Igneous Rock. Intrusive Igneous Rocks are of two main types, Hypabasal and Plutonic. The plutonic forms at deeper depths.
Igneous rocks are usually classified by their chemical composition (acidic or basic), and by whether they formed underground (intrusive, characterised by large mineral crystals) or on the surface (extrusive, made of tiny, microscopic crystals). For instance, basalt is a basic, extrusive rock, and granite is an acidic, intrusive rock.
The rock formed by molten rock that has cooled and solidified is called igneous rock. This type of rock can be classified into two main types: intrusive (or plutonic) igneous rock, which solidifies beneath the Earth's surface, and extrusive (or volcanic) igneous rock, which solidifies on the surface after a volcanic eruption. Common examples of igneous rock include granite (intrusive) and basalt (extrusive).
The process that can change an igneous rock into a metamorphic rock is called metamorphism. This occurs when the igneous rock is subjected to high temperatures and pressure deep within the Earth's crust. These conditions cause the minerals in the rock to recrystallize and realign, forming a new metamorphic rock with different physical and chemical properties.
The most commonly used chemical property to classify igneous rocks is their mineral composition, particularly the relative amounts of silica and other oxides present. Two physical properties that can help identify igneous rocks are texture (such as grain size and arrangement of crystals) and color, which can indicate the mineral content and cooling history of the rock.
TWO rock get mixed togather
Two processes a rock must undergo before becoming an igneous rock are melting, where the rock is heated to a point where it turns into magma, and cooling, where the magma solidifies to form an igneous rock.
I think you are referring to a classification of rock called sedimentary. the other two main types are metamorphic and igneous.