@mahgister
Samson has tremendous clarity. You can follow Ravel's melodic thread without ever getting lost. The orchestra behind him shines, also.
Argerich does not have his clarity but she has a wamrer touch. In a number of the pianists you have had me listen to, I don't think warmth was at the top of your list. One male pianist I can think off the top of my head who had warmth was Alfred Brendel (who just died), Horowitz, of course, warmed the cockles of his audience's heart. I think Argerich combines warmth with clarity, but will lean into warmth sometimes at the expense of clairty. You might listen to her play a piece you know very well, so that you can judge her better.
If you have the time and interest, Mitsuko Uchida has a CD with two of Beethoven's piano concertos, the 28th and 29th, the Hammerklavier, his most difficult to play.