Most other ____ Browns will probably feel similar to how Cherry Browns were, so I would probably avoid going in that direction.
Based on what you want, it sounds like you have three options here: Zealio, Topre, or Matias Quiet Clicks.
Zealio have the tactile bump like Clears but are lighter; however, you would either have to build your own custom keyboard or buy a pre-puilt custom keyboard from someone else since there are no manufactured boards with Zealio in them. This probably would not be the most ideal option.
Topre is more available from your normal online retailer like mechanicalkeyboards.com or elitekeyboards.com. You could also buy a used one off someone more easily than a Zealio board as well. Topre is hard to describe compared to Cherry switches. It's so
smooth, but still has tactility. Definitely a switch worth trying. Although, it might be worth noting it does not have a very distinguishable bump like Zealio/Clears do.
Since TKL is your layout of choice, I think a
45g Realforce would be a good start. If you don't like it, you can usually sell the Realforce out for a small loss which is also a benefit. Downside being that Topre boards are pretty pricy compared to your average mechanical keyboard and customization options are limited since Topre switch. If you want to keep keycap customization options and want a slightly cheaper board, a
Novatouch is a decent consideration although can be a bit more "rattle-y" than other Topre boards.
If you're willing to explore other layouts, the FC660C is another good option. And since it's bound to be mentioned, the HHKB as well.
Matias Quiet Clicks are cheaper options to the other two and, like Topre, are readily available in manufactured keyboards. For TKL, your best (only?) option is the
KBParadise V80 keyboard with Matias Quiet Click switches. Like Topre, keyboard customization options are very limited (Even fewer options than Topre).
I might've mentioned this in my text above, but the links I posted are all to the retail versions. If you want to save a bit ($20-$40), you could also look into Classified section or /r/mechmarket for used ones which are usually in pretty good condition.