In church circles, hand-raisers are those who often express their worship by raising their hands. There are a large variety of hand-raisers, and others have covered those varieties much better than I could; e.g. this Tim Hawkins video gives you a quick rundown. (Hawkins is a comedian who happens to be a Christian, which is an entirely different, and much funnier, thing than a Christian comedian. See also Micheal Jr.)
Moses had some hand-raising friends, too, but of a completely different kind.