I graduated from my PhD in 2019 and published my thesis online. Just before COVID I submitted an article based on a thesis chapter, but because of life getting in the way I was unable to finish it and it was taken out of the review process with encouragements to submit it again.
I am almost done with the new version, but I discovered that an article about the same topic has been published last year by another team to another journal, with an introduction that paraphrases my own introduction to a large extent. The rest of the paper is actually interesting, and they do cite my thesis.
The question is, can I still submit my own article whose introduction is very close to my thesis chapter? Or should I rewrite the intro from a completely new angle because otherwise this would count as plagiarizing the paper that was published by the other group?