Unpredictable donkeys

While all the hands are kind of similar, there's nothing really out of the ordinary about how villains acted. The only difference is some are maniacs, some are passive stations, and the last one likes to get fancy instead of playing abc. Unpredictable if you just sat down at the table, but once you have seen a few hands you can probably produce a more accurate range for them, and make correct decisions.

H1: BB bets then 3 bet on flop behind a caller on the driest of dry boards. Then sticks it in on blank turn. he has a very strong range and is betting the turn because he wants to get it in.

H2: SB bets 1/2 pot, gets called by UTG, then they both call a less than pot sized raise 3-way. Their range consists of top pair and medium strength draws. SB hits what he thinks is his miracle card, and puts it in, though he probably would have called off the small amount left in his stack on that turn regardless if the 2 came. UTG has a weak draw, 22-44, or overcards and the turn card didn't hit him. For whatever reason he figures 1/3 psb 3 way is not the right odds to call and folds.

H3: UTG limp calls PF. his range is weak or suited aces, medium and small suited connectors, as well some small pocket pairs and gaped broadways. The fact he showed up w/ 65o just means he's bad. He leads flop and turn because his hand has no showdown value. He probably decides you're not folding on the river and checks, he then probably interprets your 1/4 pot bet on the river to mean you're folding to a shove and goes ahead and does it.

H4: SB limps and flops middle pair in a limped pot and decides to bet it. He picks up a flush draw on the turn, your call on the flop either means his middle pair is no good or you've got some overcards. His half pot bet is pretty good because he's got some live outs vs a higher pair, and he's not giving a free card if you're holding overcards. River he hits, notices he's got the stones and decided to get a little fancy to try and get a bigger reward. He's lucky you had a flush too, as you're probably not bluffing often in this spot and checking behind your pairs.