I will have a lot of filters, so those filters on mobile will take a lot of vertical space and will be tricky to use… 🙁
Will it be possible to have an option to turn those filters to a list select on mobile just like you did with Posts Blocks filters (see the screeshot).
Yes it is very much possible – the post blocks and the grids share the same set of headers now. About 5 of the 7 header styles let filters collapse into a dropdown in grid and in posts blocks.
Pls check the dropdown Header Styles in elementor window and choose one among the 7 that suits your needs.