In popular Chinese superstition, how many Buddhas are there & what are
their Chinese names Anglicized? What do they symbolize? E.g slangily,
we hear of a "happy" Buddha, the "money" Buddha, the "chief" Buddha
(Lama?), Kwan Yin, Sadaksari etc.

What do divine animals, dragons, phoenixes, etc. symbolize & what
power do they have?

Ok, there is only one Buddha, what your looking at when you see
"Money" Buddha or "Lucky" Buddha is like seeing pictures of Christ on
the Cross, or Christ meeting John the Bapist. The Buddha is likely a
statue from pocket size to huge stone temple guard. Different ways of
drawing or craving the Buddha will state what "type of buddha" your
looking at.
http://acc6.its.brooklyn.cuny.edu/~phalsall/texts/chinarts.html

Dragons: Yes, using have powers from Air or Water
Phoenixes: Yes, the power of rebirth, they mate only one and die in
flames, the ash of the flames turn into the new Phoenix
take a look at 
http://en.wikipedia.org/wiki/Chinese_mythology#Mythical_creatures
for more creaters.