This advice is for FR, somewhat passive tables (i.e., pf re-raises are rare)

AQ in LP. Unless the raiser is particularly loose (justifying a 3-bet) or tight (justifying a fold), I think a call is fine. You shouldn't typically want to play a big pot on an A-high flop anyhow. If for whatever reason you are three-betting light (say an agressive 6max table, or trying to establish a Laggy image) then you should certainly 3-bet AQ.

ATo in SB vs 1 typical PFR is basically an instafold, or *occasionaly* re-raise semi-bluff (under NLT&P ATo qualifies as "best of hands you would usually fold")