My other two current cats, my former kitties and the sires I bred them to do not have a lot of Singa blood, other than what was outcrossed into Thaibok 5 generations back in one of my late queens line. Really don't know much about Singa from personal experience, although Blue Minstrel was a handsome kitty. Hatcher had an extremely pretty Minstrel daughter, a sealpoint, Singa Waltz Time of Rich-Hat, and also a New Moon Eclipse grandson, but I was interested only in blues and lilacs so I stuck to her other two stud cats, Apache and Hot Shot. (My Blue queen so definitely preferred Apache that even while she was confined with Hot Shot she would languish against Apache's side of the stud cage and make eyes at him. This annoyed Hot Shot so much that he expressed his displeasure into Apache's water dish . . . :-D )
I have heard of In Lieu although that cattery doesn't crop up anywhere in my lines. I was prowling on a couple of pedigree websites, and In Lieu has a lot of Maloja as well as New Moon and Elo-Yse (for whom I have a soft spot on account of Hi-Soks, my parents' Lilac's grandsire).