Three galaxies would be the Milky Way, Andromeda, and Comet Galaxy.
Galaxies can be classified into three main sizes: dwarf galaxies, which are small and contain less than a few billion stars; Milky Way-sized galaxies, which are intermediate in size and contain a few hundred billion stars; and giant galaxies, which are massive and can contain trillions of stars.
No you would see an entirely different vista. Most of the stars you can see from earth would not be visible to the naked eye from the galactic core, and they would also be lost in a blaze of glory of the core suns. From within a planetary atmosphere you probably would not be able to see stars even at night, due to the ambient light. The core suns are packed about a quarter of a light year apart.
There are three main types of galaxies: spiral galaxies (like the Milky Way), elliptical galaxies (oval or spherical in shape), and irregular galaxies (lacking a distinct shape). These classifications are based on the galaxies' shapes and structures.
Some non-examples is the Big Dipper, Small Dipper and cigars.
That is called the "Local Group".
The closest galaxy to our galaxy the Sagittarius galaxy but its Dwarf Galaxy, Andromeda is the Complete Galaxy and yet classified as the Galaxy which is closest to our galaxy. Facts : There are 12 Dwarf galaxies and 1 complete galaxy within the distance of 500,000 light years. Andromeda Galaxy is moving towards our galaxy at the speed 300,000 Kilometers per hour, but its so far that i would take millions of year to have a clash.
a cluster of about 40 galaxies to which the milky way galaxy belongs Five popular Local Group galaxies: 1. Milky Way 2. Andromeda 3. Triangulum 4. Large Magellanic Cloud 5. Small Magellanic Cloud
There are over 30 local to Andromeda-see list below-
There are three types of galaxies, all of which are the same, with the exception of their shapes. There are the Elliptical galaxies (football-shaped) the Spiral galaxies (like the Milky way; vortex-shaped) and Irregular galaxies (all shapes other than spiral and football shaped).
Earth belongs to the Milky Way galaxy, which is a spiral galaxy containing billions of stars. The Milky Way is part of the Local Group, a collection of galaxies that includes the Andromeda galaxy among others. The Local Group is itself part of the Virgo Supercluster, a large cluster of galaxies in the observable universe.
That is a difficult question to fully answer as types of galaxies are not fully defined. A ball park figure would be dwarf galaxies, or spiral galaxies depending on the area in question. See related question for a full breakdown.