they are loaded properly (though you shouldn't be using RealSG Rebirth without Rebirth itself). looking at the mods loaded, you definitely should see an improvement in the world textures, plants and guns - start the game and go to the training area to be able to see this. if you think it's still not working, post screenshots.
also, definitely consider adding SCP and SHTUP-ND
, SCP makes the maps much more mod friendly (among other things), and SHTUP-ND is the one mod you never want to start SS2 without.