Spiral
They are elliptical galaxies.
Yes, lenticular galaxies are lens-shaped. They will not have spiral arms.
Elliptical galaxies are large blob shaped galaxies that most galaxies will eventually look like. Elliptical galaxies are what happens when two or more large galaxies collide and coalesce.
Yes, ring galaxies are actually ring-shaped, with a circle-like appearance.
Elliptical galaxies, Lenticular galaxies and Irregular galaxies.
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).
Yes, peculiar galaxies are strangely shaped.
I think elliptical galaxies are the galaxies you are referring to. Scientist normally describe them as a flatted disk shape. These galaxies contain mainly older stars.
No, galaxies are three dimensional. Do you mean are there galaxies without a bulge in the center? That answer is yes. Some are shaped like balls, some have irregular shapes, and the rest (which is really most of them) are shaped like discs. Almost all disc-shaped galaxies have a bulge in them, but there are a few that do not have any bulge at all- they are flat discs. Just like a CD.
galaxie 1, 2, 3, 4 and 5
There are many "odd" shaped galaxies. Do a google search for irregular galaxies and take your pick. See related question.
Eliptical galaxies have older stars than spirals and elipticals are oval-shaped.