These are all viewport renders with the standard settings over at DazStudio. No additional lighting, fancy HDR or camera used. Simply load the model and click on render, you will get the same result.
For those who have trouble with the uploaded ZIP files, here is a drive link:
https://drive.google.com/file/d/1LmdAfeKhI6SsEbxmnfd6fjs3U0IW9pNe/view?usp=sharing