I would say that the Aulos alto 509B recorder has hole 6 and 7 somewhat closer together than the Yamaha.
The thing about the 509B is that the foot joint (with the double 7 holes) is somewhat fatter than the foot of the Yamaha. So that has the effect of bringing the 7 holes up toward your pinky more conveniently. I would recommend you try one. The main distributor is Rhythmband, although you might find it elsewhere (Amazon, etc):
https://rhythmband.com/collections/aulos/products/aulos-symphony-series-alto-recorder
Also, I find the 509B to be an excellent recorder. It’s my main plastic recorder. It sounds very different than an Ecodear.