%w{SnoopDogg WarrenG NateDogg}.each {|e| const_set(e, Class.new(StandardError))}

def a(klass)
  types = [SnoopDogg, WarrenG]
  begin
    raise klass, "ohhhhh we raised a type #{klass.to_s}"
  rescue *types => error
    puts "RESCUED TYPE #{klass.to_s}"
  end
end

a(SnoopDogg)
a(WarrenG)
a(NateDogg)