I use Topaz DeNoise on my Fujifilm JPEGs and I am satisfied with the results. I especially like that DeNoise allows the Fujifilm metadata to pass through and that I can select JPEG color profiles.
I also like that I can “Recover original detail” which in practice works out to remove some of the glitches that the AI filters can bring.
I would like to see similar possibilities in Photo AI. Especially the devouring of metadata makes it less useable.