My understanding is that it's the static pressure.
The definition of dynamic pressure would involve a flow velocity, hence a flow rate and a cross section area. So I guess it only makes sense for components like Pipes and Restrictions. It's not necessarily included in simlog or shown in Simscape Result Explorer, but it's possible to modify the code a bit to expose those. Below are snippets of source code from the Local Restriction (G) component:
variables (Access = protected)
variables (Access = protected, ExternalAccess = none)
if you move velocity_R to the variables section above, it will be available in logged data, and for total pressure calculation. You can include that calculation inside the custom block if you want by adding vel^2 terms to p_R (restriction) or p_I (pipe).