I prefer Ian and here are my guesses.
Ian Jacob & Eli Jacob, Ian Christopher & Eli Christopher,
Ian Anthony & Eli Anthony, Ian Matthew & Eli Matthew,
Ian Andrew & Eli Andrew, Ian David & Eli David, Ian Joseph & Eli Joseph, Ian Noah & Eli Noah, Ian James & Eli James, Ian John & Eli John, Ian Jack & Eli Jack, Ian Thomas & Eli Thomas, Ian Aaron & Eli Aaron, Ian Connor & Eli Connor, Ian Chase & Eli Chase, Ian Carter & Eli Carter, Ian Eric & Eli Eric, Ian Cole & Eli Cole, Ian Tristan & Eli Tristan, Ian Henry & Eli Henry, Ian Cade & Eli Cade,
Ian Cooper& Eli Cooper, Ian Patrick & Eli Patrick, Ian Edward & Eli Edward, Ian Hudson & Eli Hudson, Ian Hunter & Eli Hunter, Ian Zane & Eli Zane, Ian Corey & Eli Corey, Ian Scott & Eli Scott, Ian Jaxson & Eli Jaxson, Ian Walker & Eli Walker, Ian Quincy & Eli Quincy, Ian Gunner & Eli Gunner, Ian Edward & Eli Edward, Ian Arthur & Eli Arthur, Ian Wade & Eli Wade, Ian Alan & Eli Alan, Ian Ryland & Eli Ryland, Ian Atticus & Eli Atticus, Ian Brett & Eli Brett, Ian Cale & Eli Cale, Ian Todd & Eli Todd, Ian Neil & Eli Neil, Ian Seamus & Eli Seamus, Ian Cullen & Eli Cullen, Ian Xavier & Eli Xavier, Ian Harper & Eli Harper, Ian Harpo & Eli Harpo, Ian Zack & Eli Zack, Ian Sage & Eli Sage,