Switch-hitting catcher Hank Conger is expected to be called up on Tuesday, when the season ends for the Triple-A Salt Lake Bees.
Of the group, Maronde and Taylor are the only ones who haven't been up in the big leagues yet. Both will help out in the bullpen.
Maronde, 22, was taken in the third round of last year's Draft and has jumped three levels in his first full season as a pro, combining to post a 2.26 ERA, a 1.01 WHIP and a 4.74 strikeout-to-walk ratio in 20 games (18 starts) for Rookie ball, advanced Class A and Double-A. The Angels' No. 4 prospect, Maronde will also pitch in the Arizona Fall League.
Taylor, 26, was taken in the 34th round in 2008 and has made 53 relief appearances for Double-A Arkansas and Triple-A Salt Lake this year, posting a 4.27 ERA, a 1.44 WHIP and a 2.24 strikeout-to-walk ratio in 59 innings. His career Minor League ERA is 4.01.
The Angels will probably call up more players later in the month.
Peter Bourjos, rehabbing a wrist injury at Salt Lake, is eligible to be activated from the disabled list on Monday and could be added to the roster then.