Samurai action name translations

[Aosha]

Scholar

Those are actually pretty spot-on. Although I'd mention that the 策 in many of those can also translate to "plan", which really fits Scholar's "strategist" theme.
Also, the Japanese name of Excogitation is another Yojijukugo, like Meikyo Shisui and Greased Lightning. The meaning being "far sight and deep design". So planning far in advance. Careful consideration is an alright simpler version of that. Good job, Google.
Fun fact: the "flame" kanji in the Broils can also be understood as inflammation. Healer doing the opposite of what is intended, and going around causing diseases :P

And yeah, most of them for other classes are just good old katakana Engrish. I think BLM had a couple of interesting things somewhere in there, like Leylines being "mage family crest" or something...