Picture of both of them closest that I got is this:
Now to Lord Vishnu:
Here is a relatively more close painting of the Lord and Mother Lakshmi(close in the sense that the above one shows Mother in a state of service,borne out of love,and is a/their Standard depiction,while the below one shows Mother more explicitly as arddhangini .)
Now Lord Shiva:
Although a good number of pictures depict Lord Shiva in a lone,meditative pose when I search”Lord Shiva”,the number of paintings that show a close bond between Lord Shiva and Mother Parvathi is significantly higher ,in that search itself,as compared to the number of pictures showing Mother Lakshmi at Lord Vishnu’s feet,let alone as ardhangini when I search Lord Vishnu,and that showing Mother Saraswati and Lord Brahma together/close ;almost nil when I search Lord Brahma.
Also,among the Trimurti,only Lord Shiva has a complete family(depicted along with Himself.
Is there any theological meaning that can be deduced from this/reason that explains this?