I just got through talking to Dave from
this rum review website. I was put in touch through the owner of an obscure liquor store that noticed me checking the back of his rum shelves, something I always do, looking for Guat Zaya. Dave does the same thing. He said he believes similar rums are Botran Solera 1893, Diplimatico "green bottle", and Zacapa, which the last I already knew. I will keep my eyes out for those others now.