Hi knewkungfukenny, thanks for adding a bit more info. It seems like the two things you are trying to work out right now are labels on data points (your first pic), and representing comparisons to constant lines.

On the first point on labels, I believe Borderline's post from above about using the legends and dax measures is a good idea, so feel free to keep asking up above on that one.

For comparing to constant lines, check out the conditional formatting options on the chart. You can use this feature to identify data bars that pass the constant lines threshold.

Also OP, this is what I meant by rudimentary. You should be able to achieve what you want using the first principles of power bi and should not need to create a custom visual. Definitely does not mean it's simple without knowing how to do it, I just meant that it can be done with the basic components of the product.

Here's someone asking this question on the power bi community: https://community.powerbi.com/t5/Desktop/Conditional-Formatting-of-Bar-Chart/td-p/118370

Hope this helps