In terms of recovering THC from waxes the selection is of course what disolves THC very well but waxes not at all?
Answer: There are a few but the best choice is methanol really. That is the most polar and it readily desolves THC. One lab test peer reviewed for crime labs testing tested four solvents for max extraction of THC and methanol won by a bit.
I tested six solvents on just plant waxes and none of the polar solvents disolved wax very well or at all. Methanol not at all. As the polarity climbs the waxes seem to disolve better but until the hydrocarbon and conjugated hydrocarbon was used the waxes did not disolve all that well.
Here is the wax test. I do not use ethanol in my lab as for me it is a poison but ethanol would land somewhere about acetone if it was pure. Pure methanol is delivered from Amazon to me in a couple days and cheap. Pure ethanol is hella spendy owing to tax.
I now have refined enough isolate to repeat the wax test shown but now on clear isolate but have not fiddled with it yet. Methanol will drop waxes out like mad just at room temp when you disolve shatter in it by stirring or heating and it does so pretty fast. It will denature your compound and make it easy to grab most other gunk too then by filtration. I would recover in methanol then filter over a prewetted alumina (220-240 grit) column. That would clean up any extract irregardless of starting crude and recovery is nearly 100%.
I have done this for a few years now and it is fast and it works.