Any recommendations on what type of accounts to use or what might be decent investments? I certainly wouldn’t put anything I’d call an “emergency fund” in stocks right now
So pay for all your healthcare expenses with non HSA funds, keep track of the expenses, and eventually, you probably will have accumulated $10k or $20k of healthcare expenses you can reimburse yourself for IF you exhaust your regular emergency fund.
I would go with CIT Savings Connect, they have historically been near the top and they have a nice website.
https://www.doctorofcredit.com/high-interest-savings-to-get/