I loved a RM dress back in the day, but these are the antithesis of that look.
RM was sexy, confident, ball breaker power dressing. The dresses you have posted are summer wedding meets PTA style wasteland.
if you want to invoke a more modern power dressing look then it’s more wide leg trousers fitted tops in interesting fabrics (leather skirts and dresses seem to be big in our boardroom) and loafers (although heels still alive and kicking in many industries).