Jazz like this? Suggestions

Some additions similar to MRQ that I didn't see listed above:

Brent Jensen: The Sound of a Dry Martini  (basically a Paul Desmond tribute)

Ben Patterson: For Once in My Life

Houston Person: Live in Paris

Hank Jones: For My Father

As @petaluman said, check out much of the ECM catalog, past and current.

While most of it will be more 'progressive' than the Magnus Ringblom Quartet, it will also be somewhat introspective in tone and mood, like the Magnus Ringblom Quartet.

In other words, despite a lot of the artists on the ECM label being as quiet sounding, it will still have more fire in the soling, complexity, and get a bit more ’outside’ (without being avant-garde).

Here’s a short list of what this great label has to offer:

Eberhard Weber - Colours of Chloe. Later That Evening, Yellow Fields

Pat Metheny - Bright Size, Watercolors, As Falls Wichita, So Falls Wichita Falls

Craig Taborn - Daylight Ghosts

Jan Garbarek - Jan Garbarek / Bobo Stenson Quartet, Of Mist and Melting

Tord Gustavsen - Extended Circle, The Well

Azimuth - Depart,

Ralph Towner - almost anything with Towner on it is worth checking out. As well as his own recordings, he guests on a lot of other recordings.

Ketil Bjørnstad, David Darling, Terje Rypdal, Jon Christensen - The Sea,

Sidsel Endresen - Exile

Anat Fort - A Long Story, And If

Gene Harris Quartet (anything)

Kenny Baron

Woody Shaw

Frank Morgan ("Mood Indigo" is quite good)

Stan Getz/Joao Gilberto (anything)

If you want to get more Metheny-esque, there's always the "world fusion ensemble" Shadowfax,  You might find more similar music on the Windham Hill label (George Winston as an example, a jazz piano that tends to David Benoit's softer numbers).

Listening to Magnus Ringblom Quartet as I type this... very nice (ain’t the internet somethin)

I haven’t seen it mentioned but I would recommend

Paolo Fresu

Mare Nostrum  most similar 

Alma
Eros

have a similar type feel but maybe even more so.

I’m not big on the smooth stuff but Till Bronner does a nice Estate. Check it out 

https://m.youtube.com/watch?v=KNCcuquw2Y8