Hey there and welcome to the forums!
This looks like a unique way to grow Venus fly traps, but I'm not sure how well their rhizomes and roots will manage long-term. If kept in water, they can succumb to rot, so I'd be a bit nervous of that. Please do let us know how things go, because it does look quite interesting and I can see the visual appeal but, I don't know if this particular species will adapt to this kind of growing method. Hydroponics might be safer, as the rhizomes won't be constantly sat in water.
You might have success with some species of terrestrial or semi-aquatic Utricularia, though, and you'd get an amazing spectacle courtesy of their awesome roots.
Many Utric species are much more tolerant to moisture, although I think you'd probably need a small plug of soil to allow their delicate leaves to flourish, too. Some of our community have successfully grown Utricularia with their roots exposed.
There are all sorts of plants that may do welll with this particular method of growing, especially ones that do not need nutrients provided by soil. Some aquatic plants, for instance, can be grown semi-immersed, as long as humidity is high enough during the initial adaptation phase, and so those may be a good one to look into if you want a good display piece.
Anubias species, I believe, are one of the groups that can do well semi-immersed as, even when fully immersed in water, they root onto things and cannot handle having their rhizomes buried, otherwise they'll rot. (They're accustomed to having wet feet!)
I'm confident that there are other plants that could possibly do well in this particular environment, it just depends on the preference of the plant and what its rhizome can handle, really. I do sincerely hope that this method works for you and would love to hear of any updates but it would be best to keep a close eye on the health of the rhizomes as, if these start to die (which is quite likely if they are kept underwater) then you may struggle to recover the plants.
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Many Utric species are much more tolerant to moisture, although I think you'd probably need a small plug of soil to allow their delicate leaves to flourish, too. Some of our community have successfully grown Utricularia with their roots exposed.