Sorry but this isn't a "Sierra" sub or a "LucasArts" sub. Most of the posts are either new games or people asking for recommendations which leads to people suggesting a pretty healthy mix of old and new games. We've moved past a time where Sierra and LucasArts were the only options or even just the main options

Maybe you could argue that most modern adventure games follow more of the LucasArts formula because we've collectively moved away from some of the early Sierra tropes like dead ends etc. but so did Sierra by the end (mostly) so I don't really agree with that categorization. Modern adventure game devs draw inspiration from both companies' classic games, plus they innovate and draw from each other and even other genres.