I do a lot of event shooting in poor lighting conditions, my go to lens is the XF35 F/1.4, on an X-T10, I can only talk about lens I've used (I do occasionally wish for the XF56 F/1.2)
I use the XF35 F/1.4 for most of my photography, it is the lens that lives on my camera - Outside portraits, street and everything else
I use the 18mm F/2 if i'm walking around a city want to get more buildings/cityscapes, landscapes etc (the 18mm F/2 is small enough to sit in my pocket when the 35 F/1.4 is on my camera
the 27mm F/2.8 is an interesting lens, optically there is nothing wrong with it, but I don't find either the 18 or 35 large when on the camera, the focal length sits between the two and doesn't get a huge amount of use as I find one of the other lenses just sits better with me, whether it is the lack of aperture ring, or that it is so close to the 35mm in length (a few steps forwards or back is the difference), but lacks its magic, idk, I suspect if I didn't have the XF35 F/1.4 the 27mm may have been my go to lens for everyday shooting; as you already own the 23mm the 27mm is a stop slower and a similar length personally I'd skip it.
the 60mm F/2.4 is a great lens (slow to focus when doing macro work), I use this lens a lot in the studio and have no issues with focusing speeds, I suspect a great deal of focal length cross over with the XF56 though; if I didn't own the XF60 the XF56 would be top of my shopping list, but as I generally use the XF35 F/1.4 for shallow DOF portraits outside, and the XF60 F/2.4 for studio work I can't justify it. If I owned the XF56 F/1.2 I'd be tempted to either wait for the XF80mm macro lens or look at a third party solution for macro work.
So far the 23mm has been my most frequently used lens. Your comments on these other lenses are all interesting to me - and making me wish I had an unlimited budget for this kind of thing.