SSMTBs

There's others here with better knowledge of the sort of MTB you're looking for so I won't recommend anything specific in terms of a bike.
But I will say that generally 29ers have certain inherent advantages over 27.5 that might be useful to you, chiefly the gyroscopic effect that helps maintain momentum when up to speed. They also aid traction and grip better than smaller wheels. Downsides to 29ers are weight (heavier than 27.5) and handling that can be cumbersome if the bike's geo isn't optimised for the bigger wheels.

You could also consider 27.5+, a 27.5 wheel that has a tyre size on the range of 2.6" + 3". In 2.8" to 3" size the total diameter of the wheel is virtually the same as a 29er so has similar properties, but with the added benefit of more rubber for extra pneumatic suspension as well as the opportunity to run lower pressures than the 29er to get more grip when you need it.
There's many hardtails available now that can take both 29" and 27.5"+ wheels so you could have two wheelsets for different types of riding.

On-One bootzipper. Get 650b unless youre 6ft+. New Deore hydraulic brakes and whatever 1x clutch group you can get for cheap

Kona Unit SS or X if you want gears

Buy the Ritchey 29er with krampus forks for sale on here

Thanks for the input. It's given me more to think about.

Too small for me I think

Whatever you get, come on a Honey Badgers ride!

I might have some stickers for you :-D

I like

I definitely will!

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https://theradavist.com/2020/01/mone-bikes-la-roca-v2-braze-jah-part-deux/

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if it helps at all, which it probably doesn't, I'm 6'1" and have that sized Ritchey P29er. Admittedly it does have an acre of seatpost and a 120mm stem, but I've raced XC and taken it off road touring for two weeks and it's always been perfect. I do prefer smaller bikes on the whole though, so might be a personal preference thing.

Reader's ghetto braklezz fixie skidder hard tail

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Cjell Mone's stuff is great. Quite a character as well isnt he. Think it was Mone that hid rocks in Mike Halls seatpack, the year he set the Tour Divide record.

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haha amazing. First time I've seen a hub flipped like that!

lovely.

cielo

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Tidy SS from @JesperXT

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Tidy workshop too!

No, wait. Just seen this

So nice

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I've got a Charge Cooker 0 SS 650+. It's been awesome but all I would say is be wary of differing standards when looking at frames. My intention was to swap out the 650+ with narrower tyre'd 29ers for summer riding, but trying to find 29er wheels off the shelf with a 135 OLD has been more difficult that it should be, in my opinion. The bike is only 3-4 yrs old and is essentially obsolete. If I'm simply ignorant of the right places to look please do enlighten me!! could be an excuse for a new bootzipper though...