You mention maintainers, that's a curious word to use. Because it speaks of static and unchanging babysitting rather than positive and ambitious creation.
In Inkscape our ux design model is to make ux and design skills have the same respect as labor as any programmer. To give developers a way to ask for help and spaced for a ux team to exist and find itself outside of the shadow of code creation.
Adam Belis has done impressive things. Though I admit mostly with patience.
@doctormo I'm happy to use a different word, it's just the one I've heard most often. That's great news about UX roles at Inkscape! I didn't know that. So much of ANY productive accomplishment seems to be based with 'having a lot of patience'.