I have a lot of the following, which I keep meaning to cook, but can't
be bothered -

Various beans
Brown rice
Various lentils
Split peas
Soya pieces

I was thinking of cooking quite a lot of it in one go inside a slow-
cooker, then freezing it.

My dilemna is timing. Would this work -

Beans ~ 2.5 hours on high, 4 on low.
Rice ~ 1.5 hours on high, 4 on low.
Soya ~ 1 hour on high, 4 on low. (Same for split peas)
Lentils ~ 45 mins high, 4 on low.

What I would do is once the beans were on, add in the other items at
various time intervals. (I appreciate the beans would require
overnight soaking.)

Regards, Robert.