Decent alternative to second Nintendo Switch dock

No official alternative.

There are lots of 3rd party docks available but because Nintendo don't use a standard power delivery over usbC, some were known to brick switches in the early days.

So I stayed well clear. May be better nowadays but did make me hesitant.

The only one I think was reputable and did lots to test was a brand called genki. Think they call it the covert dock. That might be what you are after.

Alternative is unfortunately to move the dock or buy a second one from Nintendo.