The only one stocking time/list I am aware of is from 2014. I do not know what or how the pond was managed prior too, and I believe the 2014 owner just stocked & regularly supplied minnows & shiners to support good fishing. However, when I took ownership in 2017, I didn't have much luck bass fishing. I also realized the pond was pretty much a large bowl with no structure or cover which is why I started adding in either 18 or 19.
My kids were always able to pull out panfish pretty easily. A friend would occasional get some bass that I considered juvenile or mid-size. I struggled to catch many if any bass in most of 18 & 19 and finally last summer I landed what I considered to be a quite large LMB. Funny thing was I had a tiny hook on an ultralight with the kids trying to catch bluegill when he grabbed it, go figure. Early this spring was my best day where I was able to pull in 3 or 4 in a few hours. Again small/mid. So, the thought was adding the HSB could make it much more fun.
When I hand feed I get a pretty good busy response, but do not feel like the pond is loaded with fish to be at "capacity" (uneducated opinion). I've not managed numbers but do have a regular Heron grabbing a meal. In the past 3 years I've had a couple large fish wash up or end up in the yard one way or another.
Below are pictures of the early spring 2020 catches to give you an idea of size. The last picture is of the big one last year.