all of them seem to use the same program where they can highlight squares, circle pieces, and draw arrows to parts on the board

anybody know what program this is?

On Chessbase software you can make arrows and hilight squares using red, amber and green colours for each.

Not sure what else there is.

It's most likely Fritz.  :)

i'm in fritz right now and i have both this and chessbase light, how do you highlight squares and make arrows? i've been looking for so long lol