If my writing has been influenced directly by anyone it's King, Poe, Koontz, McCammon, and/or Matheson, though I can see how traces of Lovecraft and Mitchell would still end up in my writing and here's how:
I can best demonstrate this using music as the subject. Naturally, one would not say that the music of Metallica is reminiscent of blues greats like Chuck Berry, Muddy Waters, Robert Johnson, or Howlin' Wolf. Some younger people may have not even heard of most of the musicians I just named, but it is important to note that the bands that Metallica were influenced by were heavily influenced by all of the above, however, indirectly.
Some of the new bands just coming out, instead of growing up on Sabbath and Zepp (though both bands seem to be timeless), they are growing up on, and directly influenced by, Metallica. They copy Metallica's sound, the distortion, the "chugga, chugga, chugga." Though some of the original sound of early rock from the old blues greats is lost in translation, the influence is still there, and so it is with writing.
Nevertheless, we are unique.
The internet is filled with ridiculous quizzes telling you what state you should be living in, and in what era, with what job, and what fictional character you're most like. I'd like to think that most take these with less than a grain of salt. The results are all based on the most minute of information about you. We're all unique individuals. Each one of us likes and dislikes things for different reasons. I fancy the 70s soft rock band "Bread" because they take me back to a wonderful time in my life. They're not for everybody. For me it's nostalgic. It means something different to me than Joe Blow. Sometimes I watch an indie film that I realize nobody I know is going to be able to appreciate, so I won't bother sharing it with others. I can tell I enjoyed it for personal reasons...because of my individuality. I'm just thankful for the experience.
We, as individuals, are so unique from one another that things affect people in completely different ways. One person can smoke for 60 years and die from something completely unrelated to smoking, whereas another can smoke for 20 years and die from lung cancer. We all have separate attractions based on nostalgia, positive somatic markers, life experience, and circumstance.
We are individuals, and we are unique.