Garmin
Forerunner 255 Series
Long battery; but wrist HR tracking is inconsistent.

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I have a withings scanligth and love it because it looks like a regular watch.
I had one of those Garmins and it lasted me 2-3 years before the screen faded. I replaced it with the Withings Steel HR and after 5 years, it stopped vibrating. My Scanwatch Light replacement is such actual useless trash that I'm back to the old one, which stays charged a for much longer time and works better with the app. The other poster said she didn't use the phone notifications - that's something I actually do value, and the new one wouldn't stay connected to my phone. I'd have recommended Withings so strongly before, but I can't anymore.
The step tracking is fine. The sleep tracking is terrible.
I have a withings hybrid that I love. less ugly imo, was a decent price, and feels less like you have a piece of tech attached to you at all times. plus it measures everything I need and want
the withings watches are great. they are great for everyday tracking oft steps, sleep and some health metrics. they are weak on sport/fitness and smart/notification features. But it my daily driver. the scales are also great, I prefer the medium models (old cardio or new body comp), the high end ones seem a bit gimmicky. so don't worry, try them, there is a good chance you will be very happy.
I use a Withings watch. It works without Google Play Services but it still refers to the Withings data center.
Garmin
Forerunner 255 Series
Long battery; but wrist HR tracking is inconsistent.

Garmin
Forerunner 955 Series
Best value, clear MIP screen; limited smartwatch features.

Garmin
Fenix 7 Series
Durable, multi-week battery, flashlight; high price, buggy software.
Garmin
Instinct 2 Series
Rugged, solar multi-week battery; bulky, small screen readability issues.

Garmin
Enduro 3
Multi-week solar battery, lightweight; but bulky form factor.

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Oura - Oura Ring Series

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Apple - Ultra Series

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Garmin - Enduro 3

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Garmin - Fenix 7 Series

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Garmin - Forerunner 255 Series

Ranked #1
Oura - Oura Ring Series