You might consider jailhouse blues - that is, trapping the click-jacket on a blue stem with an elastic band or adhesive.
Many current strong tactiles have a “round” rather than “sharp” bump, including Zealio V2’s and Glorious Pandas.
Halos themselves are relatively subtle with their tactility IMO, but putting their stems in a housing intended for a click-jacket stem (like blue inks) gives a very snappy switch, but still a pretty round bump.
The sharpest bumps do belong to clickies at the moment, especially clickbars. I actually just bought some to experiment with converting them into less noisy but still sharply-tactile switches.
While not the strongest, one of the sharper tactile bumps I can think of (at least to my senses) is on the Silent Box Brown. I bet putting the top half of one of those on the bottom half of a Box Royal would yield a very tactile switch that’s slightly less noisy than a standard Royal. Box tactiles can be inconsistent, though - I also intend some experiments on addressing that.