Pentax… looked like my old SLRs made in the '50s…
I learned what I really liked: Fast and accurate AF, lots of nice lenses to choose from, preferably not too expensive.
The number of pixels was not important for me, but around 20MP suited me well (I have one 10.4MP mirrorless, and the rest of the DSLRs and mirrorless cameras are still around 20-25MP!). With time I seem to prefer faster and faster lenses, like the lovely 135 Art, or the viceless 30 Art.
I like small (and light) cameras for macro and extreme distances…
If I would buy a new camera system today it would be a camera with IBIS (if I had the funds), either a Canon R, a Nikon Z body, or a Fuji, but a mix of small sensor and big sensor bodies is a blessing! Just saying!