The Oligarchs seem to hang out in London not Dublin, and it was One WillFine Gael and Fianna Fail are probably getting their donations from Putin's oligarchs. Lawlor was over in Russia with Russian "business men" and they've been accomodated in the IFSC since laundering their billions.
As for where SF are getting thier funding, surely even you have heard about the wills that left them millions. IT was in all the papers at the time. And of course there's various Irish people, myself included, that contribute