I was thinking that Nanoblocks are the same height as Lego plates, not counting the stud. I've built a church from Lego, then tried to build one just as big using Nanoblocks: it having a 30-brick tall tower, but found it to be about 1 brick short, so I estimate Nanoblocks are 3•1mm tall which is what it says on LNO Nanoblocks box, with double height 6•3, guess they expect a 0•1 gap. The 5mm given as their height includes the stud.
So 2 Lego plates will be just over twice as tall as Nanoblocks. One may as well do each level of Nanoblocks as the 2 Lego plates levels using joins in differing places. 1st layer Lego plate, then bricks where also wanted for 2nd layer of Nano, then finish 1st layer Nano with 2nd layer of Lego plate, or maybe start with bricks.
Kawada Nano Block of Japan don't use tubes, but a ridge. This lets the brick below to be positioned anywhere along its length. It is the same with the 1×x pieces as they have no bars. Lego tiles 1×2 with 1 stud & 1×3 with 2 studs can position under their studs if they have groove.
Looking at building a Lego elephant from Nano instructions, it uses 1×4's with round ends. These Lego plates are only in 1 set. To be able to move the ears back to ~45°, I considered using hollow bricks, so square end bricks could turn like a round 1 can. A panel corner 1×1 does the job & needs to be mounted 1 plate lower so the corner of the brick is over its base.
Back of Lego elephant, black = 1×3 +2 studs & groove, white = 1×2 +1 stud & groove, yellow = 1×2 +1 stud normal & grey = 2×2 corner. There be 2 ways of doing the top part of legs. Used plate 6×x & so not hollow. Nano, red when I've not dark gray, 2×2 corner as not Kawada.
Photo of orca (killer whale), I do not have the right Lego ball joints, see 1 full brick on fin, some clone brand, 2nd black from front are 2 1×3's with 2 studs with 1×2's atop (I've none for the Nano, so got there a 1×3 atop).
As for T shape, as 2 layer, 1 using 1×3 & other 2×2 corner both with a 1×1.
Bulldog, from Wise Hawk, full brick for mouth with top part hidden for Lego.
With the beagle dog there is a 1×2 at 90° under centre of a 1×4, as can't be seen can use a 1×2 with holes as its hollow studs fit to bars. Maybe use a 1×2 slope. (Has a 1×1 atop, so full brick & plate for 2 Nano.)
Cow's udder, this = 2×3 central under 3×4, if 3×4 brick used then no problem as 2×3 fits to tubes, but slope or 2 of 2×3 wedge won't do, with 1 row of studs okay. Other way is 1×3's with 2studs across mid 2 'then 2 other way under,