This is a collection of tips that may help in identification in the future...
Blue-fronted Dancer vs Powdered Dancer Teneral
Argia apicalis
Blue-fronted Dancer
Argia apicalis
Light dorsal stripe on abdomen is narrow and side of S9 has dark markings. In Powdered, dorsal stripe is broader and side of S9 is all pale.
Per @m_shields

Ashy vs Lancet Clubtail
Limited yellow on sides of S8-S10 are good for Ashy. Not sure how much I trust on top on these segments. (Tip provided by @hairyleg )

Rambur's vs Citrine Forktail
S1 is entirely and S2 mostly pale dorsally for Rambur's Forktail (tip provided by @m_shields ) https://www.inaturalist.org/observations/165995163

Citrine Forktail
Distinct yellowish shoulder stripe and lack of blue-green wash on lower side of thorax suggest to me that this is a female Citrine instead of Furtive. (tip provided by @m_shields ) https://www.inaturalist.org/observations/140990947

Furtive Forktail
The narrowness of the middorsal thoracic stripe and the extent of orange on S9-10 indicate Furtive, although there is less orange on S3 than typical. https://www.inaturalist.org/observations/126125985

Note the bicolored stigma... https://www.inaturalist.org/observations/140699333

The orange females are immatures. This one is a mature female - no orange; instead, thorax is green on the side and dark brown on top, abdomen is blackish along entire top. (tips provided by @m_shields ) https://www.inaturalist.org/observations/140699333

Needham's Skimmer
https://www.inaturalist.org/observations/130940972
Actually, this is a female. Note the lack of secondary genitalia on the underside of S2-3 and the straight cerci. (tip provided by @m_shields )

Orange Bluet
https://www.inaturalist.org/observations/153808752
Immaturity & cold weather can darken the color of bluets, so many can appear purple depending on conditions.
(tip provided by @zvkemp )