I personally don't care who gets traded.
At the end of the day, Kirk has the most value - control + proven at MLB stage - if you want someone big/substantial/relevant for the future, this is who will get the job done.
Jansen would not net much, 2 yrs of control (~10M), history of injury, pure pull-hitter - you'd have to trade him to a contender like Astros/Guardians/Giants, maybe Mets (but I presume they'll give Alvarez a full year) and the return won't be much at all at MLB level (maybe a blue chip prospect). Astros would be the best to get that done with Vazquez out, but what are you going to get really - they aren't giving up any of their elite bullpen (had to get the trade done before Brown was promoted, but they didn't want to move him then as he was one of the hotter hitters we had) or starting (considering JV prolly won't sign with Houston since he's looking for a Scherzer contract). Maybe Barber? But he isn't MLB ready for a year or two.
Moreno, on the other hand, untested. So he would be someone who wants to contend soon and want to let go of contracts that expire before their contention window. This is super limited wrt OF (LHB) or SP. Maybe Marlins (Lopez) or Pirates (Reynolds)? But even then, it'd be a hard sell.
Also consider that bigger bases and pitch clock = more steal game, means we need someone who can throw people out, who by all scouts' standards, Moreno is best. And dude is fast, so can also steal/not get into double plays.
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Jansen brings game-calling (of the 3 catchers, pitchers are most comfortable with him barring Manoah, considering their ERA/FIP over the season has been lower by 1 or more with him catching than Kirk/Moreno).
Kirk brings framing (can't undersell it obviously when you have pitchers that feast at the lower strikezone, but this might only matter for a year or two with challenge system and possibility of robo umps)
Moreno brings the pressure of throwing runners out, so perhaps less run game against him.
TL;DR if you want someone good, Kirk is on the block. If you want fodder, trade one of the other two.
Its not about trading Kirk cause of some bias against him, its more that he is the best candidate for a trade that could fill a gap we have with someone legit, versus dumpster diving.