You might be interested in this epub I created.
It shows 14 different common fonts (plus your default & generics).
They're not in any specific order - just kinda paired sans/serif.
Arial
Times New Roman
Verdana
Georgia
DejaVu Sans
DejaVu Serif
Liberation Sans
Liberation Serif
Free Sans
Free Serif
Fontin Sans
Fontin
SIL Andika
SIL GentiumAlt
SIL Ezra
The text is Lorem Impsum + a polytonic greek excerpt + hebrew excerpt. (so don't be surprised if you see lots of missing characters - that's intentional.)
But with the lorem ipsum you should be able to get an idea of what each font looks like on your reader. (Assuming it supports epubs & embedded fonts.)
Troy