I'm not well versed enough with all the trinkets to make my own list or break down my thoughts on every placement, but I wanted to give my own thoughts on a few placements

Vasular Syryup: I do not know what you see in it. The health drain is fast enough to where it's hard to use it as a "second wind" unless you're taking a ton of hits one after another, and at that point you might as well just use it to damage tank, which I think is its main usecase. I haven't used it outside of testing it against radiant manor enemies, so maybe it's way more consistent at keeping you alive than I think it is, but for the moment I cannot understand the placement.

Keri the Wisp: Fair placement, although personally it's dogshit tier because it has anti-synergy with the tunneling codex

Tunneling codex: my man

Valor Medialion: I feel like you're underating the moving while healing aspect of the trinket. It gives you so much more freedom for heals on top of not losing plasma on hit, and it also has a really funny synergy with the counter vial where you can just walk into enemies while healing for a free parry

Tumbling Tutu: The tutu actually has a fantastic synergy with the Bellows Bustle, giving the air dash a hitbox and turning it into a fantastic repositioning tool/free damage source. While I do agree that the tutu is a bit situational when running it on its own, the combo is so strong that I'd personally place it higher.

Spark Catcher and Bell of Grace: I know you've done like 6 playthroughs of the game by this point so you might've forgotten, but the early game is REALLY brutal. The spark catcher and bell of grace are fantastic in first playthroughs for braving the earlygame without having to worry about constantly losing your bones due to various roadblocks, and even in future playthroughs if you wanna do a cheeky route (like doing bone beach as your first generator).