Compound Polarity Lookup
Polarity is an umbrella term which is popular among organic chemists. It is as vague as saying the weather is good today. &quot;Good weather&quot; may include, bright light, sunny, temperature, right humidity and so on.  Now read your own statement

Rosmarinic Acid -&gt; TMF -&gt; Sinensetin and I guess comparing compounds
of similar structure it manageable to compare bond types, groups etc
etc

Since you correctly use etc. etc. ...yes polarity includes et cetra et cetra. Its usage is discouraged by IUPAC.
The correct term is dipolarity which is a measure of the dipole moment (you can look them up in tables). Even that dipole moment is of no good because you have plenty of conformers and each conformer has a different dipole moment (at least in the gas phase).