An empty branch of Sringeri Mutt is still there besides samputa Narasimha mutt in kukke subramanya. ( Reference )
Due to Regulating act from East India Company temple administration was transferred from Shiva Brahmins to Madhwa brahmins [Reference (This book written by Madhwa Brahmin)]
For more detail about fate of Shiva Brahmins can refer this Book ...
I know of two. One is already referenced by means of a link in your question (Srikantha's).
And the other one is Srikara's bhashyam here
Since their philosophy is a bit different from older Vedantic schools, I doubt there are many bhashyams of Virshaiva schools on Brahma Sutras, but I am not sure.
If you find any please share with me. Thanks in advance