I have stopped all soft drinks, coffee, Tea few years back

I have been researching caffeine for awhile now and almost everything I read says moderate caffeine in coffee and tea most like does not contribute to arrhythmias and it can also be good for you. Energy drinks and caffeine added to sodas, colas and the rest are bad news and they add more than just caffeine that interacts with caffeine that makes it worse. If someone has links to scientific studies that says moderate caffeine is bad of arrhythmias then I'd like to read them. I'll plenty of studies if anybody is interested. I myself do not tolerate caffeine and never have. It always kept me up at night and made me jittery when I drank coffee. I quit decades before I every had arrhythmia issues. Both my parents and brother could drink fresh black coffee all day and sleep like lambs.
I have been thinking about post about this for awhile because I am wondering where the information is coming from.