Without knowing, I doubt their lines are represented at all in the UK which only has the two groups at Chester and Jersey, plus the two males at Port Lympne. They might be from well -represented lines in Europe though. Neither do I know if genetically they would make suitable partners for breeding, though I believe they are unrelated.
Bulu Mata's maternal grandparents are Puluh and Subis at Chester Zoo so he's closely related to all of their current Sumatran Orangutans. I heard s PCS staff saying on my last visit in October that they want Bulu and Reike to leave together as they have a very strong bond