Robustness checks - post regression graph

hey stata friends and family,
After I use rreg / mmregress / mregress, I want to create a scatter plot (that would consider the weights of observations) with a regression line.
I sometime use this line after I calculate weights:
twoway (lfit Y X [weight=weight])(scatter Y X [weight=weight], msymbol(oh))

Yet it seems too complicated.

In addition, what robustness check of the three you would say is better for which cases, and why? I am looking for a more common straightforward explanation.

Thank you in advance,
Yair