View attachment 334375
It's worth pointing out that this data isn't complete. The parser I use to extract attack details works for about 90% of attacks found in monster stat blocks, but fails to pull out useful details for more complicated attacks (typically those that include multiple effects in addition to the attack's normal damage).
In addition, these attacks are not weighted in any realistic way. An attack that gets used multiple times by a monster's Multiattack action is counted only once, as is the archmage's dagger attack that's probably never been used. As a result, the average damage shown here will be slightly different from the average damage a PC might experience after fighting every published monster.