The highlighted render was posted today and linked to from reddit only from /r/RimWorld. All the other renders in the list are at least a week old and older but linked to from /r/RimWorldPorn.
These statistics only cover views originating from reddit
Ignoring reddit, the fresh post did get most views, roughly 300. This could have been nearly 1000 if it had been linked to on /r/rimworldporn as well (comparing to past results)
Conclusion: linking from /r/RimWorldPorn results in more views (why not both?) This is likely because there's a lot more activity on /r/rimworld and people will not identify gallery posts.
*The second number in the list is the amount of unique viewers, from reddit. I accidentally cropped the description line off. So that's 16 viewers vs 113 on a week old render