Well, as you said, the Channels are "Last Touch" (or technically First Touch) within your reporting period.
If you need to do cross channel attribution, you can set you Orders/ Revenue / etc metrics up to be non-standard attribution, such as Linear or Participation (or maybe even a U or J curve):
On your metric, click on the gear and at the bottom of the settings, you can enable your custom attribution:
You can even use multiple columns of the same metric side by side with a different attribution model to see how the data changes.
Not all metrics can have custom attribution applied, those one will be greyed out.
Hopefully one of these models will help you see the cross channel journeys better. Good Luck.