16X Aurora Alternate Charging

I recently bought a 16X Aurora AC16251. It came with a large 180W charger that plugs in using the barrel charging port. However, this charging cable is large and inconvenient to transport. I'm looking for lighter alternatives that could provide some power through the thunderbolt port.

Some information I have seen online indicates that a 90W charger should suffice, I was able to go into a store and try out a 140W (not Dell) charger and confirm this was charging (with the slow charging notification popping up).

Has anyone successfully charged with other chargers at 90W or 100W?

Disclaimers:
-I am aware it will not charge at full speed. That is not an issue for me.

-I am aware that a slower charger cannot support gaming. I'm not needing it to, this is purely for lighter use away from home.

-I already have the intended cable, I would just like an alternate that is easier to transport.