So…
Though ethyl alcohol and Ethanol were the same thing?
https://www.calpaclab.com/teflon-ptfe-compatibility/
Read a few different compatibility charts, found that the compatibility for ethanol and ethyl alcohol were different for some plastics.
What am I missing?
Typically a compatibility chart like this is assembled as follows: a person transcribes the data from an earlier chart, which was transcribed from an earlier chart, which was transcribed from an earlier chart, which was assembled from literature data. Any typo that happens along the way is then proliferated into any later versions. Almost certainly what happened here, and one of the reasons the charts themselves tell you to take them with a grain of salt.
Right. So I guess best practice is look at a few sheets, then err on the side caution?
Ethanol and ethyl alcohol are the same thing with different names. Ethyl alcohol is a common name while ethanol is a chemical name
PTFE is compatible with Ethanol. Ethyl alcohol is the IUPAC designation—a hydroxyl group attached to 2 carbon chain (ethane) is ethyl alcohol
EDIT: Ethanol is the IUPAC name.
IUPAC = International Union of Pure and Applied Chemistry
The best practice is to have basic knowledge to know these two are the same thing and thus the chart is wrong. From there you can apply a reality check by looking as the group trend (methanol, isopropanol, butanol, etc), and knowing the true result for ethanol will be similar to those. If it is wildly different the rating is likely in error. If there is no clear group trend, you can do a simply immersion test of the substance in solvent for 24 hours and check for deformation, weight change, etc.