Very cool chart.
I have been working on an online database, however that chart makes things pretty darn easy to find quickly.
My work in progress if anyones interested. Yes, it's got some wierd glitchs, but works for the most part (still improving it as I have time). Some of the information may need updating, such as attacks.. I sorta guessed at some of them. Levels of enemies, are based on those seen, other levels may be present, but not yet observed/noted.
http://pirates.teamofx.us/potco_enemies.php
Zeppers Lvl40
http://pirates.teamofx.us