Usually, I'd go for bet flop, bet turn for value, but folding to a x/r as we hold Ad and therefore there are not as many fds possible anymore, that Villain could use for a semi-bluff.

On most runouts, I'd go for only 2 streets of value and then flop and turn to charge the vast amount of draws and high equity hands. On the exact runout I do exactly that, but if the boards pairs, I like thin value 3rd barrel (which is already exploitative play because I assume micro Villains to fold too little, so if the board pairs I won't 3-barrel my missed draws in that spot that much).

BUT: without exploitative assumption, I really like your checkback otf. AxAd is one of the best hands to cb flop. But remember, that this is more of a balancing strategy and versus weak-passive opponents we can just drop strengthening our cb ranges.

As played, bet bigger ott (does he really check twice with hands, that have you beat? he will miss value or protection if so)

OTR, tough spot, I cannot really see bluffs play like this. But Villain could value/block bet weaker hands like this.
I could not fold here, but you maybe should.

UTG RFI range should smashes this flop (K-high double b-way two-tone) against the BB defend. Betting is most certainly the way to go., your equity push is most likely close to 55%. You have nut hands/TP overpair hands that oop doesn't have and oop range has 2x(aprox) the amount of air in it from the smaller suited connectors and gappers etc.
You can simplify the shit out of your strategy by range betting here with very little deviation to the EV of your strategy. I would use a 45% sizing or something close to with my range, but in this environment can go about 2/3 to get max value from his Kx, PPT, Tx, draws, etc. Being IP is nice because you can eliminate a street from the game by checking back if board goes a stray.
My line would be CB flop range 45%(would size up with certain holding against certain opponents), 66%-overbet turn, Check back river...
As played bet turn bigger and happy to check back river on this runout or fold to a donk bet.

bet flop