pineapple is sadharan or pratyek?
Pineapple is generally considered pratyek vanaspati, not sādhāraṇ vanaspati.
In Jain classification, sādhāraṇ vanaspati means plant-bodied life where many jīvas share one body, while pratyek vanaspati means one jīva per body. Pineapple is usually placed in the pratyek category.