I'm Irish (thought that might be obvious!) But not living there anymore. My own name is much much harder than these! My other children have Irish names which I don't think are too hard and I think these both fall into that category (reason why I'm not considering Aoibheann!)
There where more baby Méabhs than baby Maeves registered in Ireland last year so definitely disagree on this point. All the Méabh I know spell it like this.
I think Méabh is very classic, Oonagh/Una is definitely not fashionable but due a come back, I think it's classic too
not generally a fan of angelized spellings. One of my son does have an angelized spelling but it's more popular than the Irish spelling in Ireland, and the Irish version of his name can have some pronunciation difficulties.
English people just have to cope with teh fact that names from other cultures exist and they might not be immediately familiar with them 🙄