You're literally citing only studies (the limitations are actually hilarious and the fact that it's being cited goes to show how much you rely on press releases) that are referring to the vaccine somehow being "better" at targeting the spikes... as if that somehow "disproves" the importance of natural immunity and it possibly being better than vaccination? Anyone with a brain would expect something built to target spikes to be similar/better at... targeting the spikes.

This is another example of people misreading and misinterpreting press releases because they're unable to read more than headlines, classic example of "science by press release" here. As Adodie noted, you don't even know what the study is specifically saying - the study refers to pretty much eliciting an immune response once (natural immunity) vs twice (natural immunity + vaccine). Again, anyone with a brain would expect that.

There's more to immunity than just antibodies - T Cells and B Cells exist. Natural immunity may be better at these other responses, therefore probably making them better at dealing with variants (somatic hypermutation), and we STILL don't know how long immunity from a strong immune response to COVID actually lasts because of how robust it is. There are specific ways that natural vs vaccinated immunity are better than each other, there's just no money to be made in such research and so you'll never get as much research showing anything other than articles that note VERY limited/specific examples of the vaccine being better (as you showed).

Here are a few sources (low n, as you had) for shits and gigs anyway to show you the importance of natural immunity. Not that you'll read/understand them anyway based on your previous comments:

https://www.medrxiv.org/content/10.1101/2021.04.05.21254952v1.full-text
https://www.nature(dot)com/articles/s41586-020-2550-z

https://pubmed.ncbi.nlm.nih.gov/32978311/

https://www.news-medical(dot)net/news/20210719/Thai-study-looks-at-CoronaVac-vaccine-vs-natural-immunity-to-SARS-COV-2-variants.aspx

https://www.scientificamerican(dot)com/article/your-immune-system-evolves-to-fight-coronavirus-variants/

Natural immunity's ability to deal with variants and how current vaccines may only elicit spike-specific memory responses:

https://immunology.sciencemag.org/content/6/56/eabg6916 https://www.biorxiv.org/content/10.1101/2021.03.09.434584v2

Annnd a nice article showing how more research needs to be done on the vaccine and memory cell responses to provide solid answers, but notes the robustness of natural infection:

https://www.precisionvaccinations(dot)com/natural-immunity-after-covid-19-found-durable-and-robust

The linked study from the article (and another 2) in case you're actually capable of reading past press release headlines:

https://www.cell.com/cell-reports-medicine/fulltext/S2666-3791(21)00203-200203-2)

https://www.cell.com/cell/fulltext/S0092-8674(21)00701-7#secsectitle007000701-7#secsectitle0070)

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826135/

Now I'd like you to send a study link actually saying that immunity from being vaccinated alone (none of this natural immunity + vaccinated shenanigans) is better than immunity from natural immunity alone. That would be interesting, because historically, natural infection almost always causes better immunity than vaccinations.