AVR Freaks closed the concise list of parts, so you will have to gp with the parametric search below:
AVRFreaks also has a pretty good interactive, parametric comparison page that lets you
select and compare I/O pin count, UARTs, Timers, Interrupts, etc. across lots of parts.
I'm also offering the matrix as a CSV file, and Excel spreadsheet, and a PERL struct for you
PERL-heads out there.