The one that looks like a tank with a tear drop inside and two arrows pointing inward is your oil pressure indicator. I know that one now as mine came on when I hit a old tipped over t-post buried in weeds and that tore a hole in my oil pan. I didn't know what the light was at the time but fortunately shut the engine down to check it out as the last of the oil finished running out of the crankcaseStill don't know why that is supposed to represent oil pressure(??).
The one with a spline gear turning indicates the PTO is running.
I have no idea what the one that looks like two pots side by side, one of them with a hinged lid, is. Can't even give a good guess.
We're thinking that's the split brakes symbol.