have acquired some level of wealth .....Golden Visa programs.....(1) stable country (2) English as primary language or fairly prevalent as a second language (3) excellent health care (4) a place I'd enjoy living.
Any suggestions?

Yes, from own experience those ones (with the limitation that your point (4) of course is higly subjective):

1. Australia: My favourite country which easily meets ALL of the above. Requires investing several Million$ to get permanent residency (PR). You (and me) are 2 years too late, otherwise we as retirees could have gotten PR for free.

2. New Zealand: Also several Million$ investment required for PR. But: Meeting (3) ONLY (more or less) if you are not dependent on the public health system which is a catastrophe, so if you pay for treatment in private hospitals. Even then not as good as Australia.

3. Monaco: Cheaper if wealthy. Just buying accomodation required, starts at around $1Million. Our local experts there can tell you more.

4. Thailand: No problem with English in the areas where foreigners/expats are concentrated (Bangkok, Phuket, Ko Samui, Chiang Mai). Excellent private hospitals for them. Excellent private care for elderlies. Golden Visa: Several options, starting at $25,000 for five years.

5. Portugal: PR is something like §500,000. English normally no problem. Healthcare system I don't know about, but we have local experts here "on board".
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P.S.: I'd love if I could agree with Jim´s "NZ.....you can pretty much choose any climate you like, depending on the town you pick. Napier is a lot like Spain, its precise antipodes. Christchurch is a bit closer to the San Francisco end of the scale.", but I can't. There is a reason why NZ is so green: Much more and often rain (followed by clear blue sky again!), with therefore often great humidity, especially in the North Island (that's where the majority lives) is much more humid. Plus: The Winters here can create heating problems, as older houses - because the winters in the North Island are mild - lack insulation and heating facilities - which comes as a bad surprise for Europeans/Americans used to central heating (I once thought "Nice that it's still 4-8 degrees Celsius in the middle of the winter" --- until I found it was the same in the house itself).

Said, writing this from Tauranga, NZ. Ask if you have questions regarding NZ.