Here's something that hasn't been mentioned yet: This FQ report is the first time that Nintendo has ever separated sales in Europe from the "Other" category. Switch only, though. Quarterly hardware shipments below:
Dec 2017 | Mar 2018 | Jun 2018 | Sep 2018 | Dec 2018 | Mar 2019 | Jun 2019 | |
Japan | 1.78 | 0.66 | 0.50 | 0.64 | 2.22 | 0.49 | 0.53 |
The Americas | 2.82 | 1.20 | 0.67 | 1.32 | 3.80 | 1.08 | 0.82 |
Europe | 2.03 | 0.59 | 0.31 | 0.88 | 2.77 | 0.58 | 0.50 |
Other | 0.62 | 0.47 | 0.40 | 0.35 | 0.62 | 0.32 | 0.28 |
Total | 7.24 | 2.92 | 1.88 | 3.19 | 9.42 | 2.47 | 2.13 |
Numbers come from here: https://www.nintendo.co.jp/ir/en/finance/hard_soft/number.html
I can't find data for the June and September quarters of 2017. They do have the data for the entire 2017 fiscal year (ending March 2018), though:
Japan: 3.78M
Americas: 5.94M
Europe: 3.79M
Other: 1.54M
And for the fiscal year of 2016 (which is just the March quarter because that's when Switch launched):
Japan: 0.60M
Americas: 1.20M
Europe: 0.76M
Other: 0.18M