Trolling spoons are spoons that are made specifically for trolling. These can be very effective. Some anglers will always have a spoon out when trolling for them.
Jigging spoons are great for deep water fishing. In saltwater, you’re most likely going to be fishing underwater structure in deep water with these spoons. Just jig them up and let the fall. You will get most of your bites on the fall.
Casting spoons can be very effective. Some anglers use them and many don’t. They are great lures for casting far and covering water. They do a good job of imitating baitfish and they will catch plenty of striped bass if you commit to using them.