I can't offer much advice about deodorants if you have tried them all but maybe you could look at the shirts you are wearing. Some fabrics and colours show sweat more than others and patterns cover it up better than solids. Maybe think about wearing work shirts that don't show the sweat so much.
What about a t-shirt under your work shirt to absorb it a bit. You could change the t-shirt at lunch time.
It's winter now so you could wear merino thermals - merino is awesome because it seems to just vapourise sweat. I wear it when I'm getting really physical in winter and it's like you're not sweating at all.