Microsorum is extremely sensitive to air humidity i also experience them as very sensitive in a closed terrarium setup. 1 little mistake of neglection air humidity 1 week to low and they already show unhappiness... Outside a greenhouse, I deem this plant impossible to keep. But never say never...
Bolbitis heudelotii should be a possibility, i remember an Amano scape with a rather large Bolbitis growing emersed from the tank planted on DW. All though i failed myself several times... It seems to be a very lengthy process to make this plant transition to these circumstances. It also might be that the gallery where Amano kept numerous scapes has a tad better air humidity for this than the regular living room with 1 tank only. But that i don't know. Only know he did it and i failed to replicate it...
That's the con with pictures on the internet, making it all look easy but it doesn't tell you the complete background story. In many cases the keeper doesn't know it all too...
I monitored the air humidity 2 inch above my open-top tank for a very long time... In my case, it never was any higher than 45%. And this is a parameter you actually should know to give you an idea what your limitations are. Not only each tank is different i guess it also goes for each room a tank is in. I seem to have a rather very dry and drafty house.. Get yourself a small electronic Hygrometer and see where you're at... The better air humidity you have to more options in being successful you have. 💪