I need to know whether the phytocompounds extracted using hexane solvent would potentially inhibit fungal organisms than the plant material extracted using methanol.
It seems that your compounds of interest (antifungal) has better solubility in hexane as compared to methanol. It's just the nature of compound. All that said, I hope you are using blank solvents as control to compare the activity of your extract. Also, if you change the plant, hexane and methanol extracts might give you a totally opposite result. It's Nature!
As for my practical exposure towards phytochemical analysis, it depends on the plant sample in which it is completely soluble based that solubility nature that extract shows its activity towards any fungal pathogens or Bacterial pathogens .
its not the case with hexane or methanol or ethanol or water any solvent
The solvent can isolate the compounds that have similar polarity, hexane is a non polar solvent which means that your active compounds are non polar. Hexane usually isolate the terpenes, steroids, fatty acids derivatives, and also non polar phenolic compounds. In this case I suggest you to analysis your extract with GCMS which can detect the volatile compounds. Refer to the literature and may find one of compounds have a high activity.