I guess probably the Swiss ones like Yuh, Swissquote, Dukascopy. Or the British ones like Monzo etc.
I mean the main question is what you want to do with it because I can recommend you some Nigerian EMIs like
www.kuda.com that you can maybe signup with some effort. But then what do you want to do with all the Nairas? Even the Philippines have solutions that may be available but very unappealing.