In reply to Climbing Pieman:
Cheers. It's a bit late at night to trial it now (I got distracted by a classic car exhibition and then piano practice).
Hopefully tomorrow, at the cost a few pence for dawdling.
My old workflow was:
open the RAW. See what the auto does. 90% of the time it would get me 90% of the way there. Then tweak the levels, saturation and contrast quickly, and save as .jpg.
That's all that I still need to do. White balance is mostly for the sake of concerts under tungsten lighting, the cameras do a decent job but some fine tuning helps. I don't really shoot many concerts now anyway, and since "losing" Photoshop, despite shooting in RAW, I've lazily(*) just chucked the jpgs into the Apple Photos thing which is more for phone photos, and do a quick edit there. Ironically, I used to do this all "properly" on a ratty old Macbook Pro I bought second hand in 2016. When that died in 2021 I bought a Mac M1 and a nice 28" monitor and have done no "proper" photo editing since! My (ahem, ahem) "serious" photography is on b&w 35mm film, hand processed and printed.
* lazy in terms of trialling and deciding on a replacement photo editor. Somehow I don't have the standard ones supplied by Canon and Sony, probably due to my cameras being second hand.