I've recently built a Dactyl Manuform [0], which is still a bit of work in progress (cf. the rubber bands :D ), but it's the most relaxed typing I've had so far. I used Gateron browns for this one, and they're really nice. I get a very relaxed typing position, and my fingers need to move very little. On the downside, there's a bit of a learning curve (ortholinear + layers)...

[0] https://imgur.com/a/dKCrqIF