My dealer uses 5W40 (currently) or 10W40 in summer and 5W30 in winter. Fully synthetic, because my car has a DPF and the oil needs to be very low ash so the DPF isn't blocked up.
ANY of these oils mentioned will work and will not harm your turbo or its oil lines. What kills the turbo - and clogs up the lines - is heat. Oil can be cooked through excessive heat.
If you don't let your turbo cool down after a hard run, the turbo will be very hot, and with the engine stopped the oil won't flow through the turbo back into the sump, so it'll just sit in the bearings and cook. If your engine is running, the hot oil is moved back to the sump before it can start burning and forming hard deposits and clogging the lines - and worse, destroying the turbo bearings that it's supposed to protect!
So rather than worry about which oil, just use what's in the manual and take care of your turbocharger by either driving gently for a couple of minutes before you reach your destination, or letting the engine idle for a minute or so once you get there.