There are dozens and dozens of popular hostas.
The minis can be grown nicely within a square foot of space.
The mid range ones do well in like 18 square inches.
Some of the large ones, like the dinner plate leafed ones, need like a square yard, 3' by 3' by 3'.
There are dark green leaves on some, variegated leaves on others and bluish green leaves on some. Even a few have ribbon like leaves etc.