I've had my Barclays Rewards MC for 6 statements now. I've put it through slow use, keeping my utilization under 30% and making 2x-3x the minimum payments before the statements cut. Out of sheer coincidence I happen to login to my account this morning to research a transaction date and noticed my credit limit had been auto increased! From months 1-5, I had a SL of $750. Apparently, after my 6th statement cut my total spending limit went to $2,050! Now it's sitting with 12% UTI and I couldn't be more pleased with Barclays. I didn't even have to ask them for it either!
Some more date points: I app'd for the Barclays Apple card 5 months ago and was denied online (and at verbal recon). They told me that my inquiries were too high. My score at time of denial for Apple was around 635. My FICO-8 score as of now is 645 (Exp), so not much of an increase in score but I have been gardening for the last 5 months. I think that has been beneficial to me for this auto CLI. Thank you Barclay!
Hope this helps some folks. =)