Is that 45g actuation or bottom out? Assuming you mean actuation, I'd recommend Gateron red inks, Alpacas, and C3 Tangerines. Do keep in mind that sound is also affected by the rest of the keyboards construction, like keycaps, mounting method, plate material, etc. and you aren't really gonna get a deep sound out of the box, pretty much all switches are clacky (high pitched) out of the box, rather than thocky (low pitch), so I'd highly recommend lubing and filming, the improvements in sound and smoothness really is worth the time and money.
YOK Burgundies (Panda housing, usually a YOK Panda, with a Kailh Burgundy stem in it) are the closest thing to linear Holy Pandas.