Looking at some of the unranked weapons, I'll share my personal experience with some of them here, based on my Master mode ranger playthrough.
Celebration Mk2
Just got it today, actually. It's a pretty good weapon, seems about on par with the Phantasm when it comes to DPS, although I'd have to do some more testing to be sure on that front. It also has the advantage of having a better AoE, limited homing capabilities and using easier-to-obtain ammunition, specifically Rocket III, which is what I normally use. However, it's biggest downside is probably the fact that its rockets are heavily affected by gravity, severely limiting its range. Even though the huge DPS is tempting, I have found myself frequently switching back to the Snowman Cannon for the Moon Lord due to it's practically unlimited range and much better homing, allowing me to stay safe distance away from the boss, which is crucial in Master Mode. Plus, it is somewhat harder to dodge fast-moving projectiles if your entire screen is filled with fireworks.
My rank: A-
Eventide
After obtaining this weapon post-Golem, I was pretty excited to try it out. When comparing it to my then-strongest weapon and fellow bow, the Tsunami, I found out that its DPS was quite a bit lower, however. After experimenting with different arrow types, I found out that the Eventide actually performs best with normal wooden arrows/the endless quiver, both in DPS as well as piercing, whereas the Tsunami required holy arrows to be truly superior against single targets. This, combined with the rainbow projectile's ability to give off quite a bit of light, makes the Eventide an excellent weapon for every-day exploring and fighting, able to wipe out hordes of enemies of the ground with ease and zero cost. It's also one of the flashiest and prettiest looking weapons in the game. However, this still begs the question of whether going through the trouble of defeating the EoL is worth obtaining this weapon, to which I honestly have to say "No." But, since the EoL drops other fantastic items worth raging for, such as the S-tier Soaring Insignia, this downside is somewhat less severe.
My rank: B-
Shadow Jousting Lance
Cool concept, but little more than a fun gimmick. It has terrible DPS when you're not charging directly into an enemy, so I've never used this thing seriously, but I guess the permanently-deployed lance could potentially be useful for holding enemies at bay? The short range also makes it basically useless for boss fights.
My rank: D
Starlight
Another EoL drop that is, in some ways, very similar to the Eventide. As with the Eventide, its main strength is it's piercing ability, which, combined with its constant barrage of attacks, turns this weapon into an absolute lawnmower. It also has the upside of being able to damage enemies passing through solid blocks, similar to spears, which makes this weapon very useful in the post-Plantera dungeon and underground jungle to get rid of those pesky cursed skulls and angry trappers, respectively. This makes the Starlight a powerful tool for every class to have. But once again, its main weakness is its range, making it almost useless, or at least extremely difficult, to use effectively during boss fights. It also has low knockback, making it much less effective against fast-moving, melee-focused enemies with decent knockback resistance, such as the Selenian.
My rank: B
Zenith
Okay, I kinda lied in the introduction to this post, I've never used this weapon. But from what I can see and have heard, the Zenith seems to be one of the, if not the single most powerful weapon in the game, at least DPS-wise. Additionally, it can freely pass through blocks, requires no ammo or mana to use, has a range spanning the player's entire screen, decent AoE, close-to-mid range auto-target and, to top it all off, no immunity frames. On a tier list concerning power alone, this thing would be God tier. However, the Zenith is also famous for having the largest crafting tree in the game and only being available post-Moon Lord, at which point you're probably already powerful enough to easily kill anything opposing you, even without using this ridiculously overpowered weapon. As a result, this weapon is extremely difficult to rank, due to its supreme power, but having no real use.
My rank: A+
(EDIT 1: Put Starlight in B tier and Eventide in B- tier)