Any e.13 guide you can fit will be great. Avoid MRP especially if it’s got a pulley (mine was no end of hassle and ripped itself apart, though that was 2×10 at the time, which I’m convinced doesn’t take to guides well).
Key really I feel is a top guide. With 1×10 you can get a narrow guide that ensures it will never be coming off the top and the hope is it won’t roll off the bottom but tension is key there.
An alternative option – a clutch mech.
Though I’d pair a clutch with a top guide, but you may not need a pulley. Depends what you ride though. I could ride loads of XC with just a top guide, but hitting gnarlier trails and certainly DH I had the chain off all the time so ended up with a clutch mech but also the e.13 guide I got (TRS+ Single, lightweight, no bash) had a pulley too. I’m undecided if I’ll keep the pulley on though. A little noisy but the full sus drivetrain picks up like a hardtail or even single speed now which is great.