Don't expect much.
https://www.jetblue.com/airline-partners

Our codeshare partnerships with the following airlines offer a seamless travel experience, from booking on jetblue.com or the JetBlue app, to convenient connections and getting your bag allowances in the bag. Please note that you can’t earn or redeem TrueBlue points with these airlines.

From the Porter side of things
https://www.flyporter.com/en-us/abou...e-partnersWhen the first departure is operated by Porter, the Porter Baggage Policy applies For journeys on your itinerary that originate with a Porter flight, you will be able to pay any applicable checked baggage at any time before departure on flyporter.com.

When the first departure is operated by JetBlue, Jet Blue’s baggage policy appliesExternal site which may not meet accessibility guidelines.