These aren’t cheap and look like bull horns, but solve your issue.
Going tubeless will solve your flat issues.
Ergon GP5 Grips, Large https://www.amazon.com/dp/B00P49W0HS/ref=cm_sw_r_cp_api_i_lt-KCb8Q17PE5
I will add one more. When I purchased a new bike a few months ago, I made the mistake of taking it out for a ride before giving the bike a through checkup. I was 15 miles from home and my left crank arm started wobbling on the spindle, then came off. Obviously, the crank arm bolt was nowhere...
Most of my posts about tubeless are about the Juiced fatbike RCS and HF11000 rims using Maxxis TR tires. Those are the only ones I have experience with, and they work well together. I weighed fat tubes and they were 550gm each. Mr. Tuffy's were 250gm each. Yes, we are talking about 65lb...
I don't think hardly anyone would want tires like the ones you describe. There may be some solid rubber tires out there, and there may be some "no flat" inserts. I assume that is what you have. But almost all serious mountain bikers and many fat tire bikers prefer "tubeless" to "tubed" tires...