Additional Study Information: You have been invited to participate in this study because you have relapsed and/or refractory B-cell lymphoma and standard therapies available to treat your disease have limited effectiveness. The purpose of this study is to find out if the experimental products, KITE-363 and KITE-753, are safe and effective in treating your relapsed and/or refractory B-cell lymphoma. Participants will receive either KITE-363 or KITE-753 one time through into the vein (IV) infusion. The experimental treatment would involve removing some of your immune cells, genetically engineering those cells to identify cancer, receiving additional therapy while you wait for those cells to be released, and then infusing those cells back and assessing the effect on your cancer cells. This is the first time KITE-363 and KITE-753 are being used in humans.