Modulation effects such as chorus, flangers, phasers typically come next in the chain. Time based effects such as delays and reverbs work best at the end of the signal chain.

Where does chorus go in effects loop?

For most players, the ideal location to place modulation effects—which include phase shifters, flangers, chorus, rotary, tremolo, vibrato and so on—is directly after a compressor and/or overdrive/distortion pedal.

Which effects go in the effects loop?

The most common types of pedals to run into an effects loop are modulation or time based effects. This includes things like chorus, tremolo, delay and reverb. You wouldn't tend to run boosts or drive based effects into the loop as this can overload the power amp section.