This is the 269th most frequent Catalan word.
diversos
"Various" or "several."
Here, 'diversos' is used as an adjective meaning 'various' or 'several', indicating an indefinite yet plural quantity of studies.
Diversos estudis han demostrat la importància de l'educació.
Various studies have shown the importance of education.
In this sentence, 'diversos' again means 'various' or 'several', qualifying the plural noun 'types' to imply multiplicity.
Es poden trobar diversos tipus de fruita en aquell mercat.
Various types of fruit can be found in that market.
'Diversos' in this context modifies 'professionals', signifying a multitude without specifying the exact number.