Agree 100% with making your own rubs and sauces and going for low or no salt whenever you can.
I also like to dry brine the meat and you'll see me in most of my recipes dry brining and even adding my seasoning on top of that because they are low in salt.
When I see a rub that's mostly salt, I know they just threw it together and I know that they are all about profit margins and not about producing a great product.
If you have the chance, try your hand at making your own. It has been one of the single best things I have ever done and it was born out of my dissatisfaction for what was available on the shelf.
Only YOU know what you like and how salty you like it, how sweet you like it, what spices and herbs you tend to enjoy. Take all of that into account and make something, write it down, then change stuff and cross out things and change the amounts.
It's all a really fun process and a great hobby if nothing else.
I spent more than 6 months creating my barbecue sauce and I started the day after I got back from attending a local barbecue competition. The meat was good but ALL of the sauce was absolute crap and I KNEW that I could do better.
I had a blast making my own stuff and I still enjoy mixing my own things up or doctoring things up that I bought at the store.
My girls grew up seeing me do that so playfully and with no fear of the outcome and both of them now do that to absolute perfection in their own kitchens with their own family.
My 20 year old son is the mix king.. I'll walk into the kitchen and he'll have every spice and herb that we own out on the cabinet carefully adding and pouring but he's way more listless about it than I like. He don't write nothing down because he's just "in the moment"