It seems like there are many usable substances which are hydrophobic (usable as a water repellent). Not so many alternatives which are oleophobic (oil repellent

It seems like there are many usable substances which are hydrophobic (usable as a water repellent). Not so many alternatives which are oleophobic (oil repellent). I am sure proper research is being conducted to find replacements. https://iopscience.iop.org/article/10.1088/1742-6596/1904/1/012010/pdf https://iopscience.iop.org/article/10.1088/1742-6596/1904/1/...