Eh, not really to be honest.
The Switch had to earn it's strong third party support ... which I honestly don't think is a bad thing at all.
It did have a decent backing by the indie community, but even then I think one or two of the ones at launch where published by Nintendo, and alot of the best indies supported the Switch after it proved successful from a third party perspective (example: Hollow Knight's development is very PC and Switch oriented).
Switch just isn't powerful enough to run a lot of 3rd party games. Considering that, the support was great. It's hard to name a 3rd party multiplat in 2017, that could run on Switch, but hasn't been brought over.