So from what it seems you want both some good trick room sweepers and trick room setters
Trick Room Setters: Basically, this Pokemon has to both learn trick room and be able to take advantage of it, or at least not be negatively affected by it. It is also suggested that it be a reliable user of the move, one that is not highly frail, as to ensure setup
Victini: Victini may seem like an odd choice, but V-create actually boosts Victini's speed under trick room, allowing Victini to spam the move. It also is quite slow after a V-create, and can hold an iron ball if you want it to be "faster".
Chandelure: Once again another seemingly odd choice, but Chandelure's combination of pure offensive power, good coverage, good bulk and average speed actually make it quite useful. It can remove opposing bug and ghost types that give trick room teams issue such as Scizor, and can utilize the spread move Heat Wave to boot.
Musharna: Like Cresselia, Musharna is a bulky psychic. Although it is slightly less bulky, it is also much slower and has a higher special attack stat. As such, it may be used as a support Pokemon with a little more offensive prowess, and it possesses a similar support movepool
Dusknoir: Dusclops' less bulky evolution seems to be inferior, but like Musharna has a bit of a more offensive touch to it. Base 100 atk and a movepool consisting of earthquake, the elemental punches, shadow punch, the prioritized shadow sneak and the useful brick break make it a nice support Pokemon with offensive presence. It is also less dependent on its item than Dusclops allowing it to run a variety of options
Cofagrigus: Pretty much a special Dusknoir with a somewhat less diverse movepool. Its titanic Defense and good base 95 special attack make it both a good trick room setter and trick room sweeper
Beheeyem: Another Bulky psychic. It may appear to be an inferior Pokemon, but it has a handy niche in Telepathy, Ally switch and base 125 sp atk.
Jellicent: Bulky water and trick room setter combined with a handy utility movepool including will o wisp, taunt, and scald. It can also abuse Water Spout, rain support, and its good defensive typing quite well under trick room
Slowbro/Slowking: Slowbro has better defense, while Slowking has better special defense. They are otherwise identical. Low base 30 speed, good overall bulk, base 100 sp atk and a great offensive movepool make them both good trick room setters and sweepers.
Abusers: These are slow Pokemon with great offensive stats that thrive with the speed advantage
Crawdaunt: Adaptability boosted Waterfall and Crunch are no joke. Decent trick room speed and pure power alone make Crawdaunt a powerful threat for any team that comes unprepared. The downside is its poor defensive typing and it being "outsped" by prominent trick room threats such as Conkeldurr
Hariyama: Basically Conkeldurr's older fatter brother, Hariyama can spam close combat in a powerful guts sweep. Its lack of Drain Punch and Mach Punch are compensated by its greater overall bulk and access to Fake Out
Scrafty: A great offensive typing that compliments most trick room setters, Scrafty is quite useful. With Fake Out, Drain Punch, Crunch and a great deal of coverage at its disposal, Scrafty is quite a nice bulky abuser. Speaking of bulk, base 116 defenses make it quite hard to take down without supereffective or overpowered hits.
Eelektross: No weaknesses, good attack and special attack, bulk and a diverse movepool? What more could you ask for?
Escavalier: The "fastest" trick room sweeper, Escavalier sits at best 20 speed. Add base 135 atk and a STAB Megahorn and you have quite a fearsome menace. However not all things are good. Escavlier has poor coverage at best, with its Stabs, some Normal moves pursuit and counter being its sole options. Its bulk is good though.
Marowak: Although subpar at first glance, Marowak's signature item Thick Club doubles its attack making it a fearsome sweeper. Add on spread moves in Earthquake and Rock slide and your opponent will tremble in fear.
Rhyperior: Rhyperior's stab on the QuakeSlide combo alone would make it a fearsome threat, but thanks to its low speed, great array of coverage (including the elemental punches, megahorn, aqua tail and hammer arm) and superb abilities in Solid Rock and Lightning Rod, Rhyperior is an absolute Trick Room Terror. Hammer arm may also be used as a "speed boosting" move.
Gigalith: At base 25 speed, Gigalith is very slow, which it great. While its movepool is somewhat limited, it receives all it needs: STAB Rock Slide, Stone Edge or Rock Blast, great coverage in Earthquake, and a powerful explosion to decimate everything on the field. Sturdy also ensures that it doesn't go down immediately
Gastrodon: Gastrodon is best used in Rain or with a water-weak partner, as in rain it can utilize powerful water STAB, while Storm Drain boosts its special attack and saves its partner from single target water attacks. Its low base 39 speed also makes it quite "fast" and it has a sole, albeit double, weakeness to grass that can be handled with ice beam or a partner.
Emboar: Although Emboar is kinda "fast", its great offensive stats, awesome movepool and decent overall bulk make it viable. Hammer Arm can also lower its speed to make it more trick room suited, and it can utilize Reckless to destroy all in its path with Head Smash, Flare Blitz and Wild Charge.
Camerupt: Eruption: at full hp a base 150 power fire spread move. Camerupt may abuse this move at its leisure under trick room, and preferably, sun. Earth Power and Hidden Power round out coverage.
There are many Pokemon, such as Amoonguss and Hippowdon who can be good supporters under Trick Room but do not learn Trick Room themselves, and there are some potential abusers such as Golurk and Aggron who didn't get the full detail, so please do not restrict yourself to this list. Best Wishes. Hope this helps
