Stereo delay - allows different delay times on each
side of the stereo field
Ping pong delay - it bounces from one side of the
stereo image to the other
Tape delay - based on the outboard tape machines,
various digital emulations being available today
Try using delays on faster songs because for those the
reverb often gets lost in the mix.
Here is how you can calculate the delay time:
If your song has a tempo of 130 BPM, then the length of
time it takes a quarter note to play would be 0,461 s. (60
seconds divided to 130 bpm equals 0,461 seconds).
To get smaller delay times start dividing. For example,
an 1/8 delay would be 0,230 s and an 1/16 delay time
would be 0,115 s.
You can find a nice delay calculator at
https://nickfever.com/Music/delay-calculator