Out of curiosity if Kitty works well for you what would be the reason to switch to Ghostty? I've never tried Kitty before but now want to see what it's like since it seems quite advanced.
For me, the major pain was font rendering. I could not find a portable configuration that would work with any screen. And even worse, for some pixel densities, whatever configuration I tried, the result was awful. In some cases, I vaguely remember there was a legacy mode that made text legible, but it had its own problems.