There's only 3 regional dialects of Irish - Connacht, Munster and Ulster - and all three dialects are tested at Aural level in the School leavers Exam. There's very little difference between them bar pronunciation and some common phrases.
The vast vast majority of daily Irish speakers would speak Connacht Irish - i.e. Connemara Irish - due to spending time in the Colaiste Gaeilge during the summer holidays; effectively state-subsidised Irish language Summer Camps. It's also the predominant dialect on TG4 - the Irish language TV station.
Wales has a massively larger proportion of native speakers of Welsh daily, but this is due to the lack of colonial history attempting to wipe out the language, and the far more multi-cultural make-up of Ireland.
I'd also disagree with a lot of the sentence structure formation and 'grammar' espoused as fact on that Wiki page. You'd be marked down on any Irish Higher Level Paper 2 marking scheme that I'm aware of - e.g.
https://www.examinations.ie/archive/markingschemes/2019/LC00...
More to the point, I'd emphasise the far larger impact of Gaeilge on the dialect of Hiberno-English spoken down there - e.g. 'What mood are you in', 'I've the hunger of the world on me', 'I'm after having a fierce supper there' etc...