How to prioritize Growth vs. Technical Learning?

I am currently on a team where I am assigned to work on a different area of the product(s) in each quarter as per the priorities of the leadership for that quarter. This has resulted in me gaining a good full-stack overview but not much depth on any specific components/technologies. I've been on this team for around 18 months right out of college but 80% of the technical work I've delivered till now has just been pattern-matching based on the existing code and infrastructure, although the outcomes have been impactful for the business. I feel like I'm not learning anything technically significant beyond company/product-specific knowledge which are not transferable to other companies. When I check out job postings from other companies for my level of experience, there always seems to be a focus on having expertise in some technology, which I can't confidently claim. This brings me to the following questions:

1. Should I stay at my current company? My career growth prospects seem great here as I have a very good reputation in my team and sibling teams, and have gotten very good feedback and visibility from managers and seniors. I also work as the lead developer for a legacy product which is not that robust and has hard-to-reproduce customer bugs, but the leadership has taken a renewed interest in adding new features to it, resulting in more potential scope for me. The main downside is low technical-learning as mentioned above, and I've heard this same remark being mentioned by senior engineers who have joined from other companies as well.

2. If I decide to switch companies, how do I bridge the lack of technical expertise that's expected for my level? When a recruiter views my resume, the technologies that I've used at work and as part of side-projects are all over the place, without a clear specialization. Although I'm confident that I can pick up these stacks without trouble on the job if needed, I feel underconfident in them in an interview setting.