Latitude 5500 Dock compatibility

A Latitude 5500 (i5-8365U / 16GB RAM...)  is on the way and I want to find the right dock.

I am confused with WD19 - 130W with 90W Power Delivery, WD19 - 180W (130W PD) and WD19TB (130W PD)

that I can find here https://www.dellemc.com/resources/en-us/asset/data-sheets/products/electronics-accessories/dell_docking_compatibility_guide.pdf

According to the specs the Latitude 5500 has a 65W AC Adapter, is it necessary to buy WD19TB (130W PD) which is recommended according to the pdf above or a WD19 - 130W with 90W PD will be fine?

Thank you in advance!