Unfortunately, these are probably due to slight variances between our respective panels. Here are some other suggestions to try:
1. At a bare minimum, calibrate in non-expert mode and choose 2.2 Television Gamma. This method won't alter the default colors but it will reduce the brightness of mid-tones a bit.
2. Calibrate in expert mode and really take your time to align all the sliders. It's fairly tedious, but I've achieved good results this way.
3. Give SuperCal a try.
THANK YOU so much for the link to SuperCal. I've never heard of it before and I wasn't satisfied by the other posted profiles. SuperCal did the job!
I'm 200% happier with my display now. Thanks to you!