I found the Ryobi ONE+ONE cordless 10″ miter saw to be pretty unusable out of the box, but with a some calibration it might be a good choice in some situations.
18V ONE+™ 216mm Cordless Sliding Mitre Saw [R18MS216-0]
RYOBI 7-1/4 in. Compound Sliding Miter Saw - RYOBI Tools
Which Mitre Saw is better: 18V 7.25 or 10 : r/ryobi
Ryobi ONE+ 18V 7-1/4″ Sliding Compound Miter Saw Review – Forestry Reviews
18V ONE+ HP BRUSHLESS 10 SLIDING COMPOUND MITER - RYOBI Tools
18V ONE+™ MITER SAW KIT - RYOBI Tools
18V ONE+ 7-1/4 Sliding Compound Miter Saw - RYOBI Tools
18V ONE+ 7-1/4 Sliding Compound Miter Saw - RYOBI Tools
Ryobi 18-Volt ONE+ Cordless Miter Saw Review – Powertoolbuzz
Ryobi 18V One+ HP 10 Miter Saw Review - Tool Box Buzz Tool Box Buzz
These two new RYOBI Tools are on another level!!!
Review: Ryobi One+One Cordless Sliding Miter Saw