If you choose Arch/Arch based, or choose to install one of its supported kernels, NTFS support is integrated into the mainline kernel since version 5.15
So you'd be able to use your already existing disk/partitions that have NTFS. Of course you'd still need to install the OS in another partition.
I tried to keep NTFS around when I switched, but ext4 is much better for spinning disks and support for whole disk encryption (LUKS) is also another pro that made me switch everything after a while