The phrase "a podium of" is correct and usable in written English.
It can be used when referring to a platform or stage for public speaking or presentation, often in a metaphorical sense to indicate a position of authority or prominence.
Example: "The scientist stood at a podium of knowledge, ready to share her groundbreaking research with the audience."
Alternatives: "a platform of" or "a stage of".
The two housing slabs, asymmetrically aligned, enclosed a garden and sat atop a podium of shops.
As smoke plumes and helicopters ascended behind him, Barzani, standing at a podium of sandbags, declared the town "liberated".
There'll be a podium — of course the brick skin will come off — and we'll build a new tower on top of the podium.
It is a nine-story leviathan of muscular ambition that spirals like a warped wedding cake on a podium of gray granite.
The auctioneer stands at a podium made of bales of "britches" of British Manufacture, much the same as the women.
I know there are a lot of fans, particularly Michael Schumacher fans, who are saying it's fake racing, that their man was robbed of a podium because of people passing using the DRS overtaking aid.
Ann Arbor Mayor Christopher Taylor stepped up to a podium to read a few of the "juicy" parts of the court's ruling.
At the 2016 End-of-Summer Resubmittedmposium, each intern submitted a 2-page report in the style of an academic paper, gave a podium presentation of their individual laboratory research, and presented their solution to the Innovation Challenge project with their group.
Ross set up a podium outside of the studio, gathered a crowd of sympathetic bystanders and did what he does best.
There have been fewer shots of a larger-than-life Mr. Obama at a podium, more of him face-to-face with workers (or waffles).
From the lane you rise through a steel colonnade to an ample podium of perfect emptiness, the main body of the building overhead, which then opens on to an also ample reception area.
