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Ah yes now you mention it, I remember David Bohm and yes a different type of holographic universe. I think that also underlines the general idea has been around in many forms for a very long time. I sort of suspect the concept goes back even further than 1947 probably into the 1920's.

For example Kaluza–Klein theory published in 1921 was a classic theory with 5 dimensions and later adapted into string theory
https://en.wikipedia.org/wiki/Kaluza-Klein_theory

I always viewed it as a hidden dimension theory but using your definition above I think I could argue it qualifies as a holographic theory.