The following is a list of the spectrum standard red-nearIR plots.
The header on a standard star plot will give the star name (or names), spectral type, and usually the catalog in which it appears as a standard, and date of observation.
These spectra all have Earth atmosphere absorption features, so are less useful for classification than the shorter wavelength spectra. They are given here for comparison.
Not all the blue wavelength spectrum standard stars in that directory have a red spectrum here.
Some of these standards have emission at Halpha.

A Weitenbeck

 Catalog abbreviations:
 AMMT   Abt Meinel Morgan Tapscott An Atlas of Low Dispersion Grating Stellar Spectra
 C+J        Cowley & Jaschek AJ 74, 375 1969
 GGv69   Gray & Garrison ApJSup 69, 301
 GGv70   Gray & Garrison ApJSup 70, 626
 KM        Keenan & McNeil An Atlas of Spectra of the Cooler Stars
 KM2       Keenan & McNeil ApJSup 71, 245 1989
 KY         Keenan & Yorka BICDS 29, 25 1985
 L            Lesh ApJSupp 17, 371
 MAT      Morgan Abt Tapscott Revised MK Spectral Atlas for Stars Earlier than the Sun
 W          Walborn ApJSupp 23, 257
 Y           Yamashita, Nariai, Norimoto An Atlas of Representative Stellar Spectra

XiPer.O7.5III.ps O7.5III((f))

Kappa Ori B0.5Ia
Kappa Cas B1Ia
HR6353 B1.5V
29 Per B3V
90 Leo B4V
Nu And B5V
Del Per B5III
HR1029 B7V
Eta Tau B7III
HT Sge B7Ia The HPOL blue spectrum of this highly reddened star is poor, so is not shown on that list.
Sigma Leo B9V

109 Vir A0V
Alpha Dra A0III
Theta Vir A1V
Theta Leo A2V
Delta UMa A3V
80 UMa A5V
Alpha Oph A5III
21 LMi A7V
Gamma Her A9III

Gamma Vir F0V
37 UMa F1V
45 Boo F5V
Beta Vir F8V

Beta Com G0V
Phi Vir G0IV
31 Com G0III
Omicron UMa G5IIIa
HD71115 G7II-III
Epsilon Vir G8III

Epsilon Cor Bor K2III
Alpha Tau K5III

Alpha Her AB M5Ib-II  Alpha Her is a binary; the spectral type refers to the primary; the secondary is a G giant a few arc seconds away which also lies in the HPOL aperture.
Component B is about 2 mag fainter than A; the spectrum should be dominated by A at these wavelengths.