We have Furrion 3 burner cooktop and decent size oven in our unit. DW says it is difficult to control temps in the oven (she has same complaint about our whirlpool gas oven in the S&B).
I goggled "high quality rv ovens" and these articles came up...probably a good place to start research.
https://rvparenting.com/best-rv-ovens/
https://rvshare.com/blog/rv-stove-or-rv-cooktop/
https://thecampingnerd.com/best-prop...ooktop-review/
FWIW...they put Wolf two-burner cooktops in Newell Motorhomes...so for $2.5 million coach you get a $1400 cooktop...but do Newell owners actually cook inside the coach?