Regulus was a very easy star to resolve even at low powers and at magnitude 1.4 it dominated the field of view compared to its puny magnitude 7.7 companion. Normally such a difference in brightness would make observation difficult but star B is a large 177" away from its parent so glare is not a problem.
Delta
Delta or 'Zosma' is a magnitude 2.5 yellow star with a magnitude 8.6 companion.
Gamma
Gamma is a nice bright pair of golden yellow stars of magnitudes 2.2 and 3.5 with a 4.4" separation. There are some other stars in the system, star C is magnitude 9.2 and star D is 9.6.